%I A137610
%S A137610 1,2,13,180,3844,110908,4030740,176640072,9059743648,532179428700,
%T A137610 35219852623888,2592514449263656,210072673380786552,
%U A137610 18579938909696752728,1780987027765227959096,183907984490301947455872
%N A137610 Self-convolution of A014062, where A014062(n) = C(n^2, n).
%F A137610 a(n) = Sum_{k=0..n} C(k^2, k) * C((n-k)^2, n-k).
%o A137610 (PARI) a(n)=sum(k=0,n,binomial(k^2,k)*binomial((n-k)^2,n-k))
%Y A137610 Cf. A014062.
%Y A137610 Sequence in context: A088316 A006905 A119400 this_sequence A073178 A062156 
               A049512
%Y A137610 Adjacent sequences: A137607 A137608 A137609 this_sequence A137611 A137612 
               A137613
%K A137610 nonn
%O A137610 0,2
%A A137610 Paul D. Hanna (pauldhanna(AT)juno.com), Jan 29 2008