%I
%S 1,1,0,1,2,1,2,1,4,7,5,7,7,16,13,16,33,38,39,31,75,79,92,
%T 118,139,201,230,269,264,494,476,523,780,886,1095,1261,1533,
%U 1857,2593,2197,3367,4256,4240,5816,6484,7985,9800,11051,12561,17530,17516
%N Expansion of Sum_{k>=0} x^k / Product_{j=1..k} (1 + x^j)^j.
%t nmax = 50; CoefficientList[Series[Sum[x^k/Product[(1 + x^j)^j, {j, 1, k}], {k, 0, nmax}], {x, 0, nmax}], x]
%Y Cf. A081362, A206100.
%K sign
%O 0,5
%A _Ilya Gutkovskiy_, Mar 05 2019
