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Topic: Tetranacci number

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	What's Special About This Number?
		is the number of planar partitions of 10.
		is the number of planar partitions of 11.
		is the number of planar partitions of 12.
	www.stetson.edu /~efriedma/numbers.html (7272 words)

	Fibonacci number (Site not responding. Last check: 2007-11-07)
		The Fibonacci numbers are important in the run-time analysis of Euclid's algorithm to determine the greatest common divisor of two integers.
		In music Fibonacci numbers are sometimes used to determine tunings, and, as in visual art, to determine the length or size of content or formal elements.
		A tetranacci number is like a tribonacci number, only that starting with four predetermined terms and each term afterwards being the sum of the preceding four terms.
	www.sciencedaily.com /encyclopedia/fibonacci_number (1808 words)

	Thirty-one Definition / Thirty-one Research (Site not responding. Last check: 2007-11-07)
		Natural numbers have two main purposes: they can be used for counting ("there are 3 apples on the table"), or they can be used for ordering ("this is the 3rd largest city in the country").
		Properties of the natural numbers related to divisibility, such as the distribution of prime numbers, are studied in number theory.
		In mathematics It is the tenth prime number, and additionally a primorial prime, the next prime number as well as primoral prime being thirty-one, with which it comprises a twin prime.
	www.elresearch.com /Thirty-one (463 words)

	Fibonacci number - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-11-07)
		The Fibonacci numbers occur as the ratio of successive convergents of the continued fraction for φ, and the matrix formed from successive convergents of any continued fraction has a determinant of +1 or −1.
		Computing Fibonacci numbers by computing powers of the golden mean is not very practical except for small values of n, since rounding errors will accrue and floating point numbers usually do not have enough precision.
		Since the conversion factor 1.609 for miles to kilometers is close to the golden mean φ, the decomposition of distance in miles into a sum of Fibonacci numbers becomes nearly the kilometer sum when the Fibonacci numbers are replaced by their successors.
	www.arikah.com /encyclopedia/Fibonacci_number (2943 words)

	29 (number) - Open Encyclopedia (Site not responding. Last check: 2007-11-07)
		It is the tenth prime number, and also a primorial prime, the next prime number as well as primoral prime being thirty-one, with which it comprises a twin prime.
		It is a Lucas number, a Pell number and a tetranacci number.
		The number of bones in a normal human skull.
	open-encyclopedia.com /Twenty-nine (197 words)

	108 (number) - Open Encyclopedia (Site not responding. Last check: 2007-11-07)
		One hundred eight is an abundant number, a tetranacci number, a Harshad number and a self number.
		108 is a number that is divisible by the value of its φ function, which is 36.
		In Homer's Odyssey, the number of suitors coveting Penelope, wife of Odysseus.
	open-encyclopedia.com /108_(number) (182 words)

	Reference.com/Encyclopedia/29 (number)
		It is the tenth prime number, and also the third primorial prime, the next prime number as well as primoral prime being thirty-one, with which it comprises a twin prime.
		The Saros number of the solar eclipse series which began on -1881 March 1 and ended on -583 April 19.
		The Saros number of the lunar eclipse series which began on -1814 July 21 and ended on -317 January 5.
	www.reference.com /browse/wiki/29_(number) (324 words)

	200 (number) (Site not responding. Last check: 2007-11-07)
		Two hundred ten 210 = 2·3·5·7, primorial, triangular number, sum of eight consecutive primes (13 + 17 + 19 + 23 + 29 + 31 + 37 + 41), pronic number, pentagonal number, Harshad number, untouchable number.
		In the Holy Bible, the number of men rebelling against Moses, who were swallowed up by a fire.
		·5, harmonic divisor number, Harshad number, also the minimum number of votes to be chosen President of the United States by the U.S. Electoral College.
	hallencyclopedia.com /200_(number) (1824 words)

	Kids Be Safe : Article 'Palindromic number' (Site not responding. Last check: 2007-11-07)
		A palindromic number is a symmetrical number written in some base a as a 1 a 2 a 3......
		The number of palindromic numbers with two digits is 9: {11, 22, 33, 44, 55, 66, 77, 88, 99}.
		666 is the 260th non square-free number: {4, 8, 9, 12, 16, 18, 20, 24,..., 648, 650, 652, 656, 657, 660, 664, 666,...}.
	www.kidsbesafe.org /DisplayArticle116658.html (2761 words)

	Fibonacci number - Wikipedia, the free encyclopedia
		The Fibonacci numbers occur as the ratio of successive convergents of the continued fraction for φ, and the matrix formed from successive convergents of any continued fraction has a determinant of +1 or −1.
		Since the conversion factor 1.609 for miles to kilometers is close to the golden mean φ, the decomposition of distance in miles into a sum of Fibonacci numbers becomes nearly the kilometer sum when the Fibonacci numbers are replaced by their successors.
		The first few Fibonacci numbers that are also prime numbers are A005478: 2, 3, 5, 13, 89, 233, 1597, 28657, 514229, ….
	en.wikipedia.org /wiki/Fibonacci_number (3160 words)

	Middle East Open Encyclopedia: 400 (number) (Site not responding. Last check: 2007-11-07)
		400 is a self number in base 10, since there is no integer that added to the sum of its own digits results in 400.
		It was believed to have been the number of one of O'Reilly's prison cells, and was the number of his first hotel room after he arrived in the United States.
		Hence the number had a mystical significance to him, as intimated in the poem.
	www.baghdadmuseum.org /ref?title=400_(number) (1819 words)

	Thirty Definition / Thirty Research (Site not responding. Last check: 2007-11-07)
		It is the first sphenic numberA sphenic number is a positive integer that is the product of three distinct prime factors.
		It is the sum of the first four squares, which makes it a square pyramidal numberA pyramidal number, or square pyramidal number, is a figurate number that represents a pyramid with a base and four sides.
		The nth pyramidal number is that is, it is the sum of the squares of the first n integers....
	www.elresearch.com /Thirty (436 words)

	1000 (number) - Open Encyclopedia (Site not responding. Last check: 2007-11-07)
		1540 - triangular number, hexagonal number, decagonal number, tetrahedral number
		1681 - 41^2, smallest number yielded by the formula n^2 + n + 41 that is not a prime
		1791 - largest natural number that cannot be expressed as a sum of at most four hexagonal numbers.
	open-encyclopedia.com /One_thousand (625 words)

	Talk:108 (number) - Wikipedia, the free encyclopedia
		This article is part of WikiProject Numbers, an attempt at creating a standardized, informative and easy-to-use resource about numbers.
		Tetranacci numbers are distinct from Fibonacci numbers, but they're defined later in the Fibonacci number article.
		I've made that link point to the appropriate section.
	en.wikipedia.org /wiki/Talk:108_(number) (120 words)

	Prime Curios!: 23
		The smallest multi-digit Tetranacci prime: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4).
		The largest integer which cannot be expressed as the sum of two squareful numbers (numbers divisible by the square of a prime).
		23 is the smaller prime factor of 2^11-1, the smallest composite Mersenne number with prime exponent.
	primes.utm.edu /curios/page.php/23.html (1155 words)

	biology - Fibonacci number
		In particular, the Fibonacci sequence L with L(1) = 1 and L(2) = 3 is referred to as the Lucas numbers.
		The straightforward recursive implementation of the Fibonacci sequence definition is also not advisable, since it would compute many values repeatedly (unless the programming language has a feature which allows the storing of previously computed function values, such as memoization).
		The Fibonacci numbers occur as the ratio of successive convergents of the continued fraction for φ, and the matrix formed from successive convergents of any continued fraction has a determinant of +1 or -1.
	www.biologydaily.com /biology/Fibonacci_number (2253 words)

	Fibonacci number (Site not responding. Last check: 2007-11-07)
		In particular, the Fibonacci sequence with F (1) = 1 and F (2) = 3 is referred to as the Lucas numbers.
		In music Fibonacci numbers are sometimes used to determine tunings, and, as in visual art, to determine the length or size of content or form al elements.
		The first few tetranacci numbers are 1, 1, 2, 4, 8, 15, 29, 56, 108, 208, 401, 773, 1490, 2872, 5536, 10671, 20569, 39648, 76424, 147312, 283953, 547337 OEIS number:'' [http://www.research.att.com/projects/OEIS?Anum=A000078 A000078] Pentanacci, hexanacci and heptanacci numbers have been computed, but they have not interested researchers much.
	www.vvvvitamins.com /article-Fibonacci_number.html (1748 words)

	Fibonacci number - Gurupedia
		As was pointed out by Johannes Kepler, the growth rate of the Fibonacci numbers, that is, F(n + 1) /F(n), converges to the golden mean, denoted φ.
		In music Fibonacci numbers are sometimes used to determine tunings, and, as in visual art, to determine the length or size of content or
		A repfigit is an integer, that when its digits start a Fibonacci sequence with that number of digits, the original number is eventually reached.
	www.gurupedia.com /f/fi/fibonacci_number.htm (1750 words)

	On Fibonacci Numbers and their Friends
		For the first way, there is already a well-established companion to the Fibonacci numbers, namely the Lucas numbers, a sequence that has the same recurrence relation as the former but with the different initial value of {2} leading to the sequence {2,1,3,4,7,11…}.
		Thus, we have the “Fibonacci n-step numbers”, with initial value v =1, and where n refers to the number of preceding terms that must be added to produce the next term.
		For n = 4, the sequence was given the name tetranacci numbers, after the Greek tessares, meaning “four” (which, by the way, is the also the root of the word “tessellation”).
	www.geocities.com /titus_piezas/Fibonacci.htm (1917 words)

	Fibonacci number bei eLexi - das Onlinelexikon (Site not responding. Last check: 2007-11-07)
		The first few tribonacci numbers are 1, 1, 2, 4, 7, 13, 24, 44, 81, 149, 274, 504, 927, 1705, 3136, 5768, 10609, 19513, 35890, 66012 OEIS number: A000073
		The first few tetranacci numbers are 1, 1, 2, 4, 8, 15, 29, 56, 108, 208, 401, 773, 1490, 2872, 5536, 10671, 20569, 39648, 76424, 147312, 283953, 547337 OEIS number: A000078 Pentanacci, hexanacci and heptanacci numbers have been computed, but they have not interested researchers much.
		Considered by many to be one of the best Malayalli poets, she has won the highest literary medal in India, the Saraswathi Samman.
	www.elexi.de /en/f/fi/fibonacci_number.html (1146 words)

	Middle East Open Encyclopedia: 5000 (number) (Site not responding. Last check: 2007-11-07)
		Five thousand (5000) is the natural number following 4999 and preceding 5001.
		5777 - smallest counterexample to the conjecture that all odd numbers are of the form p + 2a
		Iraq Museum International always displays the most recent published revision of the source article, 5000 (number); all previous versions may be viewed here.
	www.baghdadmuseum.org /ref?title=5000_(number) (276 words)

	physics - 10000 (number)
		Ten thousand (10000) is the natural number following 9999 and preceding 10001.
		In anatomy, each neuron in the human brain is estimated to connect to 10,000 others.
		78557 - conjectured to be the smallest Sierpinski number
	www.physicsdaily.com /physics/10000_(number) (2053 words)

	5000 (number) at opensource encyclopedia (Site not responding. Last check: 2007-11-07)
		Please call customer service at 800.724.3085 with-in 30 days of receiving your purchase for a return authorization number.
		Our Sleep Number Mattresses are sure to give you the ultimate in sleep comfort.
		My husband and I purchased a queen-sized Sleep Number 5000 mattress in March of this year...
	www.springknow.com /5000.html (589 words)

	Fibonacci number Tetranacci number - Wikipedia, the free encyclopedia
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		We don't have an article called "Fibonacci number Tetranacci number"
		Wait a few minutes, or check the deletion log.
	www.wikipedia.org /wiki/Fibonacci_number_Tetranacci_number (73 words)

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