Binomial coefficient C(8n,n-4).

A004385

Binomial coefficient C(8n,n-4).

Terms

    a(0) =1a(1) =40a(2) =1128a(3) =27720a(4) =635376a(5) =13991544a(6) =300500200a(7) =6348337336a(8) =132601016340

External references