%I #9 Jul 20 2018 06:03:31
%S 1,-11,44,-77,132,-638,1771,-2464,5687,-19371,38533,-66793,160710,
%T -367730,747219,-1458655,2888787,-6357505,12977239,-23575079,47325498,
%U -98587841,187236499,-352094413,684939838,-1333767820
%N Expansion of Product_{m>=1} (1+m*q^m)^-11.
%H G. C. Greubel, <a href="/A022703/b022703.txt">Table of n, a(n) for n = 0..1000</a>
%t With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-11, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 19 2018 *)
%o (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-11)) \\ _G. C. Greubel_, Jul 19 2018
%K sign
%O 0,2
%A _N. J. A. Sloane_