%I #5 Mar 30 2012 18:38:57
%S 4,600,2116800,149361408000,195185487974400000,
%T 4526188681429365350400000,1814098233992362204186460160000000,
%U 12350461816416310792905806186828267520000000
%N Let M_n be the n X n matrix with M_n(i,j)=1/(i+j+2); then a(n)=1/det(M_n).
%o (PARI) for(n=1,10,print1(1/matdet(matrix(n,n,i,j,1/(i+j+2))),","))
%K easy,nonn
%O 1,1
%A _Benoit Cloitre_, Apr 21 2002