Constant term in the expansion of (-1 + (1 + w + 1/w) * (1 + x + 1/x) * (1 + y + 1/y) * (1 + z + 1/z))^n.

A328875

Constant term in the expansion of (-1 + (1 + w + 1/w) * (1 + x + 1/x) * (1 + y + 1/y) * (1 + z + 1/z))^n.

Terms

    a(0) =1a(1) =0a(2) =80a(3) =2160a(4) =121200a(5) =6136800a(6) =356570960a(7) =21225304800

External references