%I
%S 1,4,24,90,541,2032,12275,46472,282003,1075404,6549906,25125114,
%T 153481299,591529776,3622111560,14013307170,85975792075,333669151420,
%U 2050493623760,7978700883230,49098707209695,191470222802880,1179633190545755,4608890486329844,28423658754983701
%N a(n) = Sum_{k=0..n1} T(n,k) * T(n,k+1), with T given by A026386.
%K nonn
%O 1,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 17 2019
