a(n) = n! * Sum_{d|n} d^n / d!^(n/d).

A358595

a(n) = n! * Sum_{d|n} d^n / d!^(n/d).

Terms

    a(0) =1a(1) =6a(2) =33a(3) =376a(4) =3245a(5) =67716a(6) =828583a(7) =22050176a(8) =420850809a(9) =12580687900a(10) =285351587411

External references