Binomial coefficient C(5*n,n-9).

A004351

Binomial coefficient C(5*n,n-9).

Terms

    a(0) =1a(1) =50a(2) =1485a(3) =34220a(4) =677040a(5) =12103014a(6) =201359550a(7) =3176716400a(8) =48124511370a(9) =706252528630

External references