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 A294191 #13 Oct 25 2017 10:25:41 %S A294191 1,1,20,1233,152416,31391225,9694519776,4190408587645, %T A294191 2414572869757952,1788571346467193361,1655904985345402048000, %U A294191 1873608841984994237091881,2543757905332880336197324800,4081324788082969930056684134953,7639334000918272184846041849942016 %N A294191 a(n) = n! * [x^n] exp(n*((1+x)^n - 1)). %H A294191 Seiichi Manyama, <a href="/A294191/b294191.txt">Table of n, a(n) for n = 0..209</a> %Y A294191 Main diagonal of A294118. %Y A294191 Cf. A294045. %K A294191 nonn %O A294191 0,3 %A A294191 _Seiichi Manyama_, Oct 24 2017