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T(2n+1,n+2), T given by A026780.
0

%I #4 Mar 30 2012 18:56:11

%S 1,6,30,144,687,3296,15972,78294,388320,1947910,9875566,50560246,

%T 261177401,1360112590,7134802722,37673830960,200106632766,

%U 1068539351340,5733226876876,30894846668416,167137498306038,907416216735816

%N T(2n+1,n+2), T given by A026780.

%K nonn

%O 1,2

%A _Clark Kimberling_