%I #4 Mar 30 2012 18:56:09
%S 1,4,14,57,222,928,3764,15971,66190,283464,1190628,5131002,21749532,
%T 94153056,401757672,1745117091,7484144598,32595240952,140342565620,
%U 612526487822,2645723309284,11567425911936,50095161350616,219340900447118
%N a(n) = T(2n-1,n-1), T given by A026648.
%K nonn
%O 1,2
%A _Clark Kimberling_