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 A325140 #6 Apr 15 2019 14:14:49
%S A325140 1,3,14,87,668,6070,63474,748902,9823904,141648408,2224529640,
%T A325140 37766939760,688838821032,13426208682120,278381951154384,
%U A325140 6115924828583640,141876076197342720,3464565965515181760,88816387548215208384,2384385707634518563776,66886418077269442554240
%N A325140 a(n) = Sum_{k=0..n} Sum_{j=0..n-k} binomial(j+k, k)*|Stirling1(n, j+k)|*(k+2)^j.
%o A325140 (PARI) a(n) = sum(k=0, n, sum(j=0, n-k, binomial(j+k, k)*abs(stirling(n, j+k, 1))*(k+2)^j)); \\ _Michel Marcus_, Apr 15 2019
%Y A325140 Row sums of A325139.
%K A325140 nonn
%O A325140 0,2
%A A325140 _Peter Luschny_, Apr 15 2019