a(n) = 81*n^3*(n-1)^5*(n+1)^2*(n^2-6*n+1)*(n^3-79*n^2+163*n-81).

A259563

a(n) = 81*n^3*(n-1)^5*(n+1)^2*(n^2-6*n+1)*(n^3-79*n^2+163*n-81).

Terms

    a(0) =0a(1) =0a(2) =2571912a(3) =2472394752a(4) =138662798400

External references