A173682 Number of ways of writing n as a sum of 9 nonnegative cubes.

1, 9, 36, 84, 126, 126, 84, 36, 18, 73, 252, 504, 630, 504, 252, 72, 45, 252, 756, 1260, 1260, 756, 252, 36, 84, 504, 1260, 1689, 1332, 756, 588, 630, 630, 882, 1332, 1341, 1134, 1638, 2520, 2520, 1638, 1008, 828, 756, 1638, 3780, 5040, 3780, 1596, 504, 252, 588, 2520, 5040, 5076, 2772, 1296, 1332, 1296, 1386, 2772, 3816, 2772, 2142, 3798, 5121, 4032

Offset

0,2

Comments

Order matters. This is the coefficient of q^n in the expansion of {Sum_{m>=0} q^(m^3)}^9.

Links

Seiichi Manyama, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. 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: A285198 A230212 A229394 * A009522 A045851 A173243

Adjacent sequences: A173679 A173680 A173681 * A173683 A173684 A173685

Keyword

nonn

Author

N. J. A. Sloane, Nov 25 2010

Status

approved