%I #15 Nov 02 2018 12:11:38
%S 1,0,1,1,2,2,5,4,9,9,16,17,31,31,52,59,89,101,154,172,254,294,412,483,
%T 675,782,1070,1265,1686,1996,2647,3121,4086,4854,6252,7442,9534,11306,
%U 14360,17092,21489,25566,31989,37981,47224,56123,69283,82290,101185,119930,146768
%N Expansion of Product_{1 <= i < j} 1/(1 - x^(i*j)).
%H Seiichi Manyama, <a href="/A321285/b321285.txt">Table of n, a(n) for n = 0..10000</a>
%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>
%F Euler transform of A056924.
%F G.f.: Product_{k>0} 1/(1 - x^k)^A056924(k).
%t nmax = 50; CoefficientList[Series[Product[1/(1 - x^k)^Floor[DivisorSigma[0, k]/2], {k, 1, nmax}], {x, 0, nmax}], x] (* _Vaclav Kotesovec_, Nov 02 2018 *)
%Y Cf. A056924, A182269, A321286.
%K nonn
%O 0,5
%A _Seiichi Manyama_, Nov 02 2018