Binomial coefficient C(6n,n-9).

A004364

Binomial coefficient C(6n,n-9).

Terms

    a(0) =1a(1) =60a(2) =2145a(3) =59640a(4) =1426425a(5) =30872016a(6) =622614630a(7) =11919192480a(8) =219295068300

External references