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 A265758 #11 Dec 17 2015 06:38:20
%S A265758 1,2,6,16,38,88,200,428,902,1874,3780,7504,14732,28368,54052,101960,
%T A265758 189750,349996,640218,1159624,2084952,3722008,6593560,11606268,
%U A265758 20308188,35312170,61065636,105060200,179795936,306244136,519291476,876554860,1473504846
%N A265758 Expansion of Product_{k>=1} ((1 + k*x^k)/(1 - k*x^k)).
%C A265758 Convolution of A022629 and A006906.
%H A265758 Vaclav Kotesovec, <a href="/A265758/b265758.txt">Table of n, a(n) for n = 0..5000</a>
%F A265758 a(n) ~ c * 3^(n/3), where
%F A265758 c = 28711548.45004804552683870974706458425598... if mod(n,3) = 0
%F A265758 c = 28711547.74098394497470795294574937283075... if mod(n,3) = 1
%F A265758 c = 28711547.58138731567204220029302329316039... if mod(n,3) = 2.
%t A265758 nmax = 40; CoefficientList[Series[Product[(1 + k*x^k)/(1 - k*x^k), {k, 1, nmax}], {x, 0, nmax}], x]
%Y A265758 Cf. A006906, A015128, A022629, A022661, A022693, A261584.
%K A265758 nonn
%O A265758 0,2
%A A265758 _Vaclav Kotesovec_, Dec 15 2015