a(n) = n! * Sum_{k=1..n} ( Sum_{d|k} 1/(d * (k/d)^d) )/(n-k)!.
A354339
a(n) = n! * Sum_{k=1..n} ( Sum_{d|k} 1/(d * (k/d)^d) )/(n-k)!.
Terms
- a(0) =1a(1) =4a(2) =13a(3) =47a(4) =188a(5) =939a(6) =5332a(7) =36196a(8) =279085a(9) =2464592a(10) =23591753a(11) =259110191a(12) =3030440580a(13) =38874240339a(14) =535736880460
External references
- oeis: A354339