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 A291666 #13 Sep 02 2017 04:05:11
%S A291666 1,2,2,2,10,18,18,18,50,100,118,118,206,438,582,582,806,1606,2344,
%T A291666 2506,3122,5322,8202,9498,11130,16844,26110,32272,37018,52274,78018,
%U A291666 100098,115986,155026,223190,291674,345132,439518,618734,811790,972846,1204190,1653726
%N A291666 Expansion of Product_{k>=1} ((1 + x^(k^2)) / (1 - x^(k^2)))^(k^2).
%C A291666 Convolution of A291649 and A291655.
%H A291666 Vaclav Kotesovec, <a href="/A291666/b291666.txt">Table of n, a(n) for n = 0..10000</a>
%F A291666 log(a(n)) ~ 5 * Pi^(1/5) * ((8-sqrt(2)) * Zeta(5/2))^(2/5) * n^(3/5) / (4*3^(3/5)).
%t A291666 nmax = 50; CoefficientList[Series[Product[((1+x^(k^2))/(1-x^(k^2)))^(k^2), {k, 1, nmax}], {x, 0, nmax}], x]
%Y A291666 Cf. A001156, A033461, A103265, A156616, A206622, A291649, A291655, A291667, A291721.
%K A291666 nonn
%O A291666 0,2
%A A291666 _Vaclav Kotesovec_, Aug 29 2017