%I #4 Mar 30 2012 18:56:09
%S 1,3,8,36,114,558,1856,9384,31942,164322,566928,2948184,10262004,
%T 53761068,188306112,991821456,3490234182,18458523378,65190481904,
%U 345875613144,1225052975644,6516499594212,23134851823872,123325174525104
%N a(n) = T(2n,n), T given by A026648.
%K nonn
%O 0,2
%A _Clark Kimberling_