This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A321285 #15 Nov 02 2018 12:11:38 %S A321285 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 A321285 675,782,1070,1265,1686,1996,2647,3121,4086,4854,6252,7442,9534,11306, %U A321285 14360,17092,21489,25566,31989,37981,47224,56123,69283,82290,101185,119930,146768 %N A321285 Expansion of Product_{1 <= i < j} 1/(1 - x^(i*j)). %H A321285 Seiichi Manyama, <a href="/A321285/b321285.txt">Table of n, a(n) for n = 0..10000</a> %H A321285 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %F A321285 Euler transform of A056924. %F A321285 G.f.: Product_{k>0} 1/(1 - x^k)^A056924(k). %t A321285 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 A321285 Cf. A056924, A182269, A321286. %K A321285 nonn %O A321285 0,5 %A A321285 _Seiichi Manyama_, Nov 02 2018