%I
%S 0,0,1,0,0,0,3,0,0,0,0,0,10,0,0,0,0,0,0,0,35,0,0,0,0,0,0,0,0,0,126,0,
%T 0,0,0,0,0,0,0,0,0,0,462,0,0,0,0,0,0,0,0,0,0,0,0,0,1716,0,0,0,0,0,0,0,
%U 0,0,0,0,0,0,0,0,6435,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,24310,0
%N a(n) = A034869(n)  A008311(n).
%F a(n) = A001700(m) if n = (m+1)*(m+2) and a(n) = 0 otherwise.
%K easy,nonn
%O 0,7
%A _Philippe DelĂ©ham_, Nov 13 2005
