Let M_k be the k X k matrix M_k(i,j)=1/binomial(i+n,j); then a(n)=1/det(M_(n+1)).

A069945

Let M_k be the k X k matrix M_k(i,j)=1/binomial(i+n,j); then a(n)=1/det(M_(n+1)).

Terms

    a(0) =1a(1) =-6a(2) =-360a(3) =252000a(4) =2222640000

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