a(n) = 3*2^(2*n-1)*(n-1)*n^3*binomial(2*n,n)^2, a closed form for a triple binomial sum involving absolute values.

A272913

a(n) = 3*2^(2*n-1)*(n-1)*n^3*binomial(2*n,n)^2, a closed form for a triple binomial sum involving absolute values.

Terms

    a(0) =0a(1) =0a(2) =6912a(3) =2073600a(4) =361267200a(5) =48771072000

External references