a(n) = n! * Sum_{d|n} d^n / (d! * (n/d)!).
A354897
a(n) = n! * Sum_{d|n} d^n / (d! * (n/d)!).
Terms
- a(0) =1a(1) =5a(2) =28a(3) =353a(4) =3126a(5) =94237a(6) =823544a(7) =72042497a(8) =585825130a(9) =157671732881a(10) =285311670612
External references
- oeis: A354897