A173678 Number of ways of writing n as a sum of 4 nonnegative cubes.

1, 4, 6, 4, 1, 0, 0, 0, 4, 12, 12, 4, 0, 0, 0, 0, 6, 12, 6, 0, 0, 0, 0, 0, 4, 4, 0, 4, 12, 12, 4, 0, 1, 0, 0, 12, 24, 12, 0, 0, 0, 0, 0, 12, 12, 0, 0, 0, 0, 0, 0, 4, 0, 0, 6, 12, 6, 0, 0, 0, 0, 0, 12, 12, 4, 12, 12, 4, 0, 0, 6, 0, 12, 24, 12, 0, 0, 0, 0, 0, 12, 16, 4, 0, 0, 0, 0, 0, 4, 4, 0, 12, 24, 12, 0, 0, 0, 0, 0, 24, 24, 0, 0, 0, 0, 0, 0, 12, 1, 0, 0

Offset

0,2

Comments

Order matters. This is the coefficient of q^n in the expansion of {Sum_{m>=0} q^(m^3)}^4.

Links

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

Crossrefs

Cf. A004829, A008451, A010057, A173677, A051343, A173676.

Sums of k cubes, number of ways of writing n as, for k=1..9: A010057, A173677, A051343, A173678, A173679, A173680, A173676, A173681, A173682.

Without order you get A025448.

Sequence in context: A023901 A247669 A342278 * A219234 A350481 A155675

Adjacent sequences: A173675 A173676 A173677 * A173679 A173680 A173681

Keyword

nonn,easy

Author

N. J. A. Sloane, Nov 24 2010

Status

approved