a(n) = n! * A129505(n) * (-1)^(n+1).

A238685

a(n) = n! * A129505(n) * (-1)^(n+1).

Terms

    a(0) =1a(1) =-6a(2) =210a(3) =-17640a(4) =2693880a(5) =-649479600a(6) =226750764240

External references