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 A173681 Number of ways of writing n as a sum of 8 nonnegative cubes. 11
 1, 8, 28, 56, 70, 56, 28, 8, 9, 56, 168, 280, 280, 168, 56, 8, 28, 168, 420, 560, 420, 168, 28, 0, 56, 280, 560, 568, 336, 224, 280, 280, 238, 336, 428, 336, 406, 840, 1120, 840, 392, 224, 168, 224, 840, 1680, 1680, 840, 196, 56, 28, 280, 1120, 1680, 1148, 448, 428, 568, 420, 448, 868, 840, 448, 840, 1689, 1736, 1008, 616, 616, 336, 476, 1688, 2576 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Order matters. This is the coefficient of q^n in the expansion of {Sum_{m>=0} q^(m^3)}^8. LINKS Seiichi Manyama, Table of n, a(n) for n = 0..10000 L. E. Dickson, All integers except 23 and 239 are sums of eight cubes, Bull. Amer. Math. Soc. 45 (1939), 588-591. PROG (PARI) lista(n)=my(q='q); Vec(sum(m=0, (n+.5)^(1/3), q^(m^3), O(q^(n+1)))^8); \\ Michel Marcus, Apr 12 2016 CROSSREFS Cf. A004830, A173677. Sums of k cubes, number of ways of writing n as, for k=1..9: A010057, A173677, A051343, A173678, A173679, A173680, A173676, A173681, A173682. Sequence in context: A001486 A230211 A229393 * A045850 A264354 A033580 Adjacent sequences:  A173678 A173679 A173680 * A173682 A173683 A173684 KEYWORD nonn AUTHOR N. J. A. Sloane, Nov 25 2010 STATUS approved

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Last modified October 20 04:37 EDT 2019. Contains 328247 sequences. (Running on oeis4.)