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 A308333 #5 May 21 2019 02:26:20
%S A308333 1,1,4,36,528,11675,359640,14519337,736902656,45751463361,
%T A308333 3406549900000,299204233781497,30553846336392192,3582331552631208533,
%U A308333 477188038404378339584,71582596353063387354375,12001959362744065545994240,2234380582272202437600859617
%N A308333 a(n) = n! * [x^n] (1 + x)^exp(n*x).
%t A308333 Table[n! SeriesCoefficient[(1 + x)^Exp[n x], {x, 0, n}], {n, 0, 17}]
%Y A308333 Cf. A007116, A302581, A308332.
%K A308333 nonn
%O A308333 0,3
%A A308333 _Ilya Gutkovskiy_, May 20 2019