%I #11 Jul 05 2021 14:47:15
%S 1,1,3,6,16,101,66341,2535301200456458802993449461708
%N a(n) = (n-1)^a(1) + (n-2)^a(2) + (n-3)^a(3) + ... + 1^a(n-1).
%K nonn
%O 1,3
%A _Jon Wild_, Jul 14 1997
