Sum of orders of all permutations of n letters.

A060014

Sum of orders of all permutations of n letters.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =13a(4) =67a(5) =471a(6) =3271a(7) =31333a(8) =299223a(9) =3291487a(10) =39020911a(11) =543960561a(12) =7466726983a(13) =118551513523

External references