%I #7 Feb 21 2013 15:16:49
%S 1,3,9,36,285,1908,21630,197328,2113911,23814810,294557142,3893052636,
%T 55457566905
%N A071605(n)/(n-1)!.
%Y Cf. A071605, A040175.
%K nonn,more,hard
%O 1,2
%A _N. J. A. Sloane_, Feb 08 2008
%E a(10)-a(13) from _Stephen A. Silver_, Feb 21 2013