a(n) = A059366(n,n-2) = A059366(n,2) for n >= 2, where the triangle A059366 arises in the expansion of a trigonometric integral.

A001194

a(n) = A059366(n,n-2) = A059366(n,2) for n >= 2, where the triangle A059366 arises in the expansion of a trigonometric integral.

Terms

    a(0) =3a(1) =9a(2) =54a(3) =450a(4) =4725a(5) =59535a(6) =873180a(7) =14594580a(8) =273648375a(9) =5685805125a(10) =129636356850

External references