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%I #4 Mar 30 2012 18:56:11
%S 1,11,80,489,2732,14512,74888,380329,1916709,9637687,48528434,
%T 245289395,1246499970,6374296278,32816505566,170106486358,
%U 887697088316,4662338571684,24636365887246,130918389450108,699335986465354
%N T(2n,n+4), T given by A026780.
%K nonn
%O 4,2
%A _Clark Kimberling_