a(n) = n! * Sum_{d|n} d^(n-d) / d!^(n/d).
A358593
a(n) = n! * Sum_{d|n} d^(n-d) / d!^(n/d).
Terms
- a(0) =1a(1) =3a(2) =7a(3) =49a(4) =121a(5) =2701a(6) =5041a(7) =219521a(8) =1587601a(9) =33446701a(10) =39916801a(11) =17731796545a(12) =6227020801
External references
- oeis: A358593