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 A342199 #5 Mar 04 2021 20:56:01
%S A342199 1,1,33,519,43111,5068111,840782023,291086377719,139698959369111,
%T A342199 90748115988081551,90809507057803456103,124011515918275951611959,
%U A342199 217278911997171247450862041,509237348184229328050319432621,1567286639251140454692258569881053
%N A342199 a(0) = 1; a(n) = Sum_{k=1..n} binomial(n,k)^5 * a(k-1).
%t A342199 a[0] = 1; a[n_] := a[n] = Sum[Binomial[n, k]^5 a[k - 1], {k, 1, n}]; Table[a[n], {n, 0, 14}]
%Y A342199 Cf. A040027, A061686, A336197, A342196, A342197, A342198.
%K A342199 nonn
%O A342199 0,3
%A A342199 _Ilya Gutkovskiy_, Mar 04 2021