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 A154961 #12 Jul 10 2023 08:20:40
%S A154961 0,1,3,25,340,7026,204862,8007602,404077632,25569505628,1982619985192,
%T A154961 184861494417920,20406183592852460,2631875641089358912,
%U A154961 392163247878318070876,66855512799464487146588,12929525365915201064027856,2815456378791384288128303192
%N A154961 2nd column of A154960.
%C A154961 A052882 might have similarities with this sequence because A052882 is the 2nd column in table A154921 which is similar to A154960.
%o A154961 (PARI) { (matrix(30,30,i,j,(-1)^(i!=j)*stirling(i,j,2))^(-1))[,2] } \\ _Max Alekseyev_, Jun 17 2011
%Y A154961 Cf. A052882, A154921, A154960.
%K A154961 nonn
%O A154961 1,3
%A A154961 _Mats Granvik_, Jan 18 2009
%E A154961 More terms from _Max Alekseyev_, Jun 17 2011