1!*2!*3!*...*n!*H(n); H(n) the n-th harmonic number.

A195462

1!*2!*3!*...*n!*H(n); H(n) the n-th harmonic number.

Terms

    a(0) =1a(1) =3a(2) =22a(3) =600a(4) =78912a(5) =60963840a(6) =325173657600

External references