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# Topic: Heptagonal number

###### In the News (Sat 18 May 13)

 Triangular number - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-07) The sequence of triangular numbers (sequence in OEIS) for n = 1, 2, 3... One of the most famous triangular numbers is 666, also known as the Number of the Beast. For example, the sixth heptagonal number (81) minus the sixth hexagonal number (66) equals the fifth triangular number, 15. www.eastcleveland.us /project/wikipedia/index.php/Triangular_number   (494 words)

 Prime Curios!: 41 It's one of the numbers p (or "Lucky Numbers of Euler") such that a Euler-like polynomial is prime for n = 0, 1,..., p - 2. The Heptagonal number (r(5r - 3)/2) created using the prime base number of r = 41, is a concatenation of itself, 4141. The prime number 41 is the record number of matches played by a player in an English cricket season (Bobby Abel in 1902). primes.utm.edu /curios/page.php/41.html   (868 words)

 1000_(number)   (Site not responding. Last check: 2007-10-07) 1001 - sphenic number, pentagonal number, pentatope number 1540 - triangular number, hexagonal number, decagonal number, tetrahedral number 1791 - largest natural number that cannot be expressed as a sum of at most four hexagonal numbers. www.apawn.com /search.php?title=1000_(number)   (833 words)

 Table of Figurate Numbers, Sorted, Through 10,000 Hendecagonal Number, or 11-gonal number, Hen(16), hence the Heterogeneous Jonathan Number Hen(S(4)) Hendecagonal Number, or 11-gonal number, Hen(25), hence the Heterogeneous Jonathan Number Hen(S(5)) the 18-gonal Number 18gon(25), hence the Heterogeneous Jonathan Number 18gon(S(5)) www.magicdragon.com /fig.html   (10985 words)

 More about Palindromic Heptagonals    (Site not responding. Last check: 2007-10-07) Palindromic numbers are numbers which read the same from Heptagonal numbers are defined and calculated by this extraordinary intricate and excruciatingly complex formula. The palindromic heptagonal numbers are categorised as follows : www.ping.be /~ping6758/hepta.htm   (164 words)

 On the Number 26 The 3rd heptagonal pyramidal number = 1, 8, 26 Number of letters in the English alphabet = 26 Number of bones in the human foot = 26 www.wisdomportal.com /Numbers/26.html   (4156 words)

 Table of Polytope Numbers, Sorted, Through 1,000,000 It is also the first of an infinite number of multidimensional Polytope Numbers such as the Pentatope (4-Simplex or Hypertetrahedron), Hyperoctahedron, 24-cell, Hyperdodecahedron, and Hypericosahedron -- these Polytope numbers are the subject of recent papers by this author, see References. Octahedral Number Octh(14), also the 22-gonal Number 22gon(14) [conjectured to be the largest 22-gonal Octahedral Number], also the 459-gonal Pyramidal Number 459Pyr(3) Hendecagonal Number, or 11-gonal number, Hen(26); also the Heptagonal Number Hep(36), note that the two digits of the index (36) are also the first and last digit of the Heptagonal Number (base 10) www.magicdragon.com /poly.html   (9059 words)

 Home   (Site not responding. Last check: 2007-10-07) Discover also the relationships between the polygonal numbers. Due to space constraint, we will only investigate the properties of the first eight set of polygonal numbers as shown above. Decagonal Number, Heptagonal Number, Hexagonal Number, Nonagonal Number, Octagonal Number, plaza.ufl.edu /jeksuan/Home.html   (73 words)

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