login
a(n) = T(2n-1,n-1), T given by A026648.
0

%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_