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| | Cubic Number |
 | | cubic number is a figurate number of the form |
 | | The hex pyramidal numbers are equivalent to the cubic numbers (Conway and Guy 1996). |
 | | There is a finite set of numbers which cannot be expressed as the sum of distinct positive cubes: 2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,...(Sloane's A001476). |
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