a(n) = n! * Sum_{d|n} d^d / (d! * (n/d)!).
A354899
a(n) = n! * Sum_{d|n} d^d / (d! * (n/d)!).
Terms
- a(0) =1a(1) =5a(2) =28a(3) =281a(4) =3126a(5) =48517a(6) =823544a(7) =16995617a(8) =387692650a(9) =10047310481a(10) =285311670612
External references
- oeis: A354899