%I #3 Mar 30 2012 18:55:59
%S 1,2,4,10,24,56,132,344,880,2216,5568,14912,39248,101952,265216,
%T 718240,1925376,5115008,13574976,37150464,100744448,271103616,
%U 729513984,2008900096,5495163136,14942424576,40595259392,112428786176,309465434112,847395311616
%N s(n+3)/4, where s is A024739.
%K nonn
%O 1,2
%A _Clark Kimberling_