Binomial coefficient C(7n,n-7).

A004375

Binomial coefficient C(7n,n-7).

Terms

    a(0) =1a(1) =56a(2) =1953a(3) =54740a(4) =1353275a(5) =30872016a(6) =666563898a(7) =13834413152a(8) =278818865325

External references