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 A308330 #7 May 21 2019 03:49:32
%S A308330 1,2,19,346,10217,441226,26023123,1998840586,193094418161,
%T A308330 22841006706928,3239088790361491,541309430523114804,
%U A308330 105106521730010262745,23431755937256853296514,5936989025261397848036755,1694791457312643753292004446,540937403928198054978670965089
%N A308330 a(n) = n! * [x^n] exp(exp(n*x)/(1 - x) - 1).
%t A308330 Table[n! SeriesCoefficient[Exp[Exp[n x]/(1 - x) - 1], {x, 0, n}], {n, 0, 16}]
%Y A308330 Cf. A063170, A292914, A308331, A321974.
%K A308330 nonn
%O A308330 0,2
%A A308330 _Ilya Gutkovskiy_, May 20 2019