A022709 - OEIS

%I #9 Jul 20 2018 06:04:00

%S 1,-17,119,-442,1054,-2805,10336,-29393,60724,-150620,452914,-1066546,

%T 2195703,-5396208,13442002,-29151005,62519523,-141740051,317832119,

%U -683311906,1431370114,-3054813215,6608329573,-13743348845

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

%H G. C. Greubel, <a href="/A022709/b022709.txt">Table of n, a(n) for n = 0..1000</a>

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

%o (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-17)) \\ _G. C. Greubel_, Jul 20 2018

%K sign

%O 0,2

%A _N. J. A. Sloane_