A022709 Expansion of Product_{m>=1} (1+m*q^m)^-17.

1, -17, 119, -442, 1054, -2805, 10336, -29393, 60724, -150620, 452914, -1066546, 2195703, -5396208, 13442002, -29151005, 62519523, -141740051, 317832119, -683311906, 1431370114, -3054813215, 6608329573, -13743348845

Offset: 0

Author

N. J. A. Sloane

Keywords

• sign

Links

• G. C. Greubel, Table of n, a(n) for n = 0..1000

Programs

Mathematica

With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-17, {k, 1, nmax}], {q, 0, nmax}], q]] (* G. C. Greubel, Jul 20 2018 *)

PARI

m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-17)) \\ G. C. Greubel, Jul 20 2018