a(n) = A001652(n) * A046090(n).

A098602

a(n) = A001652(n) * A046090(n).

Terms

    a(0) =0a(1) =12a(2) =420a(3) =14280a(4) =485112a(5) =16479540a(6) =559819260a(7) =19017375312a(8) =646030941360

External references