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 A265841 #11 Sep 07 2023 15:56:53 %S A265841 1,1,16,97,337,2177,7313,38529,108594,717186,2053522,7527458,30757155, %T A265841 88042387,448973459,1390503396,4087546309,12699966117,49599776261, %U A265841 124699632310,608410782855,1651128186296,4862631132392,13170300313769,39285370060347,130999461143020 %N A265841 Expansion of Product_{k>=1} (1 + k^4*x^k). %H A265841 Vaclav Kotesovec, <a href="/A265841/b265841.txt">Table of n, a(n) for n = 0..2000</a> %F A265841 G.f.: exp(Sum_{k>=1} Sum_{j>=1} (-1)^(k+1)*j^(4*k)*x^(j*k)/k). - _Ilya Gutkovskiy_, Jun 14 2018 %F A265841 Conjecture: log(a(n)) ~ 4*sqrt(n/2) * (log(2*n) - 2). - _Vaclav Kotesovec_, Dec 27 2020 %t A265841 nmax = 40; CoefficientList[Series[Product[1 + k^4*x^k, {k, 1, nmax}], {x, 0, nmax}], x] %Y A265841 Cf. A022629, A092484, A265838, A265840, A265842. %Y A265841 Column k=4 of A292189. %K A265841 nonn %O A265841 0,3 %A A265841 _Vaclav Kotesovec_, Dec 16 2015