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 A292406 #12 Sep 16 2017 17:11:05 %S A292406 1,2,10,72,670,7896,113572,1939028,38463550,869985586,22098989952, %T A292406 622728621984,19271496576612,649553583740576,23680212403186584, %U A292406 928276782505698920,38931911577966732814,1739307919812511213916,82457732209611432170734 %N A292406 Expansion of Product_{k>=1} ((1 + k^k*x^k)/(1 - k^k*x^k)). %H A292406 Seiichi Manyama, <a href="/A292406/b292406.txt">Table of n, a(n) for n = 0..386</a> %F A292406 Convolution of A023882 and A265949. %F A292406 a(n) ~ 2*n^n * (1 + 2*exp(-1)/n + (exp(-1) + 10*exp(-2))/n^2). - _Vaclav Kotesovec_, Sep 16 2017 %t A292406 nmax = 20; CoefficientList[Series[Product[(1 + k^k*x^k)/(1 - k^k*x^k), {k, 1, nmax}], {x, 0, nmax}], x] (* _Vaclav Kotesovec_, Sep 16 2017 *) %Y A292406 Cf. A023882, A265949, A292407. %K A292406 nonn %O A292406 0,2 %A A292406 _Seiichi Manyama_, Sep 15 2017