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%I #4 Mar 30 2012 18:57:02
%S 1,2,2,8,24,106,546,3368,24032,195170,1777650,17950552,199059672,
%T 2405063018,31448531954,442501797656,6666753146496,107081325959938,
%U 1826636018849442
%N T(n,n-1), array T as in A054090.
%K nonn
%O 1,2
%A _Clark Kimberling_