J_n(n), where J is the Jordan function, J_n(n) = n^n product{p|n}(1 - 1/p^n), the product is over the distinct primes, p, dividing n.
A067858
J_n(n), where J is the Jordan function, J_n(n) = n^n product{p|n}(1 - 1/p^n), the product is over the distinct primes, p, dividing n.
Terms
- a(0) =1a(1) =3a(2) =26a(3) =240a(4) =3124a(5) =45864a(6) =823542a(7) =16711680a(8) =387400806a(9) =9990233352a(10) =285311670610
External references
- oeis: A067858