%I #3 Mar 30 2012 16:49:26
%S 0,1,1,3,3,9,3,6,6,30,15,25,15,30,6,10,10,70,42,84,60,140,35,49,35,
%T 140,60,84,42,70,10,15,15,135,90,198,154,385,105,165,132,572,260,390,
%U 210,378,63,81,63,378,210,390,260,572,132,165,105,385,154,198,90,135,15,21,21,231
%N A002487(n)*A002487(n+1)*A002487(n+2)/2.
%K nonn
%O 0,4
%A _N. J. A. Sloane_, Jun 13 2002