a(n) = (5*F(n)*F(n-1)*F(2*n-1)*a(n-1) + F(n-1)*L(n)*a(n-2))/(L(n-1)*F(n)), with a(0) = 1, a(1) = 0, where F(n) = A000045(n) and L(n) = A000032(n).
A350902
a(n) = (5*F(n)*F(n-1)*F(2*n-1)*a(n-1) + F(n-1)*L(n)*a(n-2))/(L(n-1)*F(n)), with a(0) = 1, a(1) = 0, where F(n) = A000045(n) and L(n) = A000032(n).
Terms
- a(0) =1a(1) =0a(2) =3a(3) =25a(4) =816a(5) =59475a(6) =12031005a(7) =6229446000
External references
- oeis: A350902