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 A308332 #6 May 21 2019 02:26:29
%S A308332 1,1,6,60,936,21495,681480,28157451,1455590528,91689831225,
%T A308332 6907344210400,612700433073707,63107430169208832,7455570223877314721,
%U A308332 999839697339310324224,150885818035154310155625,25434297819615665229168640,4758031551536565527014516561
%N A308332 a(n) = n! * [x^n] 1/(1 - x)^exp(n*x).
%t A308332 Table[n! SeriesCoefficient[1/(1 - x)^Exp[n x], {x, 0, n}], {n, 0, 17}]
%Y A308332 Cf. A190314, A191365, A308333.
%K A308332 nonn
%O A308332 0,3
%A A308332 _Ilya Gutkovskiy_, May 20 2019