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 A318247 #6 Aug 24 2018 13:15:26 %S A318247 1,1,2,42,600,28920,374285520,128100273840,131101518683520, %T A318247 143354704247556480,173401404266683545849388800, %U A318247 2538767479410416957720411116800,105287752487031026606448840363801600,4510685217145833106538730603088118860800,288804138719404983322786510403231912442931200 %N A318247 a(n) = [x^n] Product_{k>=1} (1 + n!*x^k). %H A318247 Vaclav Kotesovec, <a href="/A318247/b318247.txt">Table of n, a(n) for n = 0..65</a> %t A318247 nmax = 15; Table[SeriesCoefficient[Product[(1+n!*x^k), {k, 1, n}], {x, 0, n}], {n, 0, nmax}] %Y A318247 Cf. A077365, A265950, A292306, A292414, A318246. %K A318247 nonn %O A318247 0,3 %A A318247 _Vaclav Kotesovec_, Aug 22 2018