a(n) = A059366(n,n-3) = A059366(n,3) for n >= 3, where the triangle A059366 arises from the expansion of a trigonometric integral.

A001756

a(n) = A059366(n,n-3) = A059366(n,3) for n >= 3, where the triangle A059366 arises from the expansion of a trigonometric integral.

Terms

    a(0) =15a(1) =60a(2) =450a(3) =4500a(4) =55125a(5) =793800a(6) =13097700a(7) =243243000a(8) =5016886875a(9) =113716102500

External references