%I #4 Mar 30 2012 18:56:51
%S 1,1,4,22,126,751,4595,28514,179277,1136405,7256229,46583010,
%T 300438175,1944986187,12632217312,82269089182,537071072123,
%U 3513452296105,23026993173298,151165338147804,993811676366531,6542280703133297
%N T(2n,n), array T as in A047030.
%K nonn
%O 0,3
%A _Clark Kimberling_