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%I #4 Mar 30 2012 18:56:53
%S 1,2,6,28,120,501,2020,8062,31992,126556,499478,1968504,7751812,
%T 30513489,120090702,472636988,1860354732,7323975621,28840527086,
%U 113600162826,447592682400,1764087889221,6954932056860,27428450072466
%N T(n,n-3), array T as in A047120.
%K nonn
%O 3,2
%A _Clark Kimberling_