A294581 Expansion of Product_{k>=1} (1 - k^2*x^k)^k.

1, -1, -8, -19, -21, 139, 448, 1414, 1206, -3865, -21271, -65257, -116480, -76230, 494952, 2082603, 5801391, 10117600, 8498261, -25314504, -144955267, -405982721, -858529330, -1081275709, 126891854, 6202698189, 22569319856, 56419872881, 102176753056

Offset: 0

Author

Seiichi Manyama, Nov 02 2017

Keywords

• sign

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..6927

Crossrefs

Column k=2 of A294580.

Programs

PARI

N=66; x='x+O('x^N); Vec(prod(k=1, N, (1-k^2*x^k)^k))