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 A293055 #8 Sep 29 2017 16:01:19
%S A293055 1,1,7,85,1561,40501,1414351,63752137,3580066225,243666746281,
%T A293055 19695440339191,1861672467512221,203222602188410377,
%U A293055 25344097136222687005,3576607716683440603711,566387437351728771087121,99916441198022855099556961,19511402630734166295545687377
%N A293055 a(n) = n! * [x^n] Product_{k>0} exp(binomial(n+k-1,n)*x^k).
%F A293055 a(n) = n! * [x^n] exp(x/(1-x)^(n+1)).
%t A293055 Table[n!*SeriesCoefficient[Exp[x/(1-x)^(n+1)], {x, 0, n}], {n, 0, 20}] (* _Vaclav Kotesovec_, Sep 29 2017 *)
%Y A293055 Cf. A293012.
%K A293055 nonn
%O A293055 0,3
%A A293055 _Seiichi Manyama_, Sep 29 2017