The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #8 Nov 10 2023 12:27:30
%S 0,1,2,5,31,745,89401,64368721,324418353841,13080548026869121,
%T 4746669267990266628481,17224713439683079541431852801,
%U 687555441429141549439426981886956801,329340156533265088807964627407023326809881601
%N a(n) = (n-1)!*a(n-1)+1.
%H Harvey P. Dale, <a href="/A051399/b051399.txt">Table of n, a(n) for n = 0..44</a>
%t nxt[{n_,a_}]:={n+1,n!*a+1}; NestList[nxt,{0,0},15][[All,2]] (* _Harvey P. Dale_, May 29 2017 *)
%K nonn
%O 0,3
%A _Aleksandar Petojevic_