The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #4 Mar 30 2012 18:56:51
%S 1,4,15,55,203,756,2835,10698,40590,154711,591998,2272920,8752198,
%T 33787677,130729863,506821408,1968360249,7656736914,29826609906,
%U 116339203127,454317156153,1776063279485,6950000821250,27220990233570
%N T(n,n+3), array T given by A047010.
%K nonn
%O 0,2
%A _Clark Kimberling_