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a(n)=M(n,2)/M(n,1)^2 (see comment).
0

%I #6 Mar 30 2012 18:39:23

%S 1,1,7,299,75489,111654831,965748455463,48881464214720003,

%T 14501604902479448419313,25264056045683085316538557915,

%U 258965250751022100651152205229358175

%N a(n)=M(n,2)/M(n,1)^2 (see comment).

%C M(n,p)= determinant of the n X n matrix m(i,j)={prod(k=1,i,k+j)}^p. Terms are always odd integers.

%o (PARI) M(n,p)=matdet(matrix(n,n,i,j,prod(k=1,i,k+j)^p)); a(n)=M(n,2)/M(n,1)^2;

%Y Cf. A096313.

%K nonn

%O 0,3

%A _Benoit Cloitre_, Jun 29 2004