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 A341726 #11 May 13 2022 09:51:05
%S A341726 1,-2,15,-124,1285,-16026,233135,-3875768,72487593,-1506355510,
%T A341726 34433714755,-858675022932,23197217353661,-674881675961234,
%U A341726 21036941762791575,-699465496639029616,24710351707159115089,-924304656631807218798,36494922945480344959595
%N A341726 Column 1 of A341723.
%F A341726 a(n) = (-1)^(n+1)*n*Sum_{k=0..n-1} k!*Fibonacci(k+1)*Stirling2(n-1, k). - _Peter Luschny_, May 13 2022
%p A341726 a := n -> (-1)^(n+1)*n*add(k!*combinat:-fibonacci(k+1)*Stirling2(n-1, k), k = 0..n-1): seq(a(n), n = 0..20); # _Peter Luschny_, May 13 2022
%Y A341726 Cf. A000556, A341723.
%K A341726 sign
%O A341726 1,2
%A A341726 _N. J. A. Sloane_, Mar 04 2021
%E A341726 More terms from _Peter Luschny_, May 13 2022