Binomial coefficient C(5n,n-11).

A004353

Binomial coefficient C(5n,n-11).

Terms

    a(0) =1a(1) =60a(2) =2080a(3) =54740a(4) =1215450a(5) =24040016a(6) =437353560a(7) =7471375560a(8) =121550931645

External references