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%I #2 Mar 30 2012 18:37:04
%S 1,2,4,30,384,7300,186620,6046600,239321824,11283624600,622168133880,
%T 39555748796080,2867144894306352,234743115413228864,
%U 21539307881356682144,2200021023571489017104,248656258771528223642624
%N Column 1 of triangle A132471.
%C Diagonal m of triangle T=A132471 equals diagonal m-1 of matrix power T^m for m>1: T(n,k) = [T^(n-k)](n-1,k) for n>=k>0, with T(n,n)=1 and T(n+1,n)=n+1 for n>=0.
%Y Cf. A132471 (triangle); other columns: A132472, A132474.
%K nonn
%O 0,2
%A _Paul D. Hanna_, Aug 22 2007
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