Smallest k for which the number of divisors d of k such that d == -d^(k/d) (mod k) is equal to n, or -1 if no such k exists.
A390392
Smallest k for which the number of divisors d of k such that d == -d^(k/d) (mod k) is equal to n, or -1 if no such k exists.
Terms
- a(0) =1a(1) =2a(2) =30a(3) =390a(4) =6270a(5) =36894a(6) =528990a(7) =6373290a(8) =32222190a(9) =3180844590a(10) =2248482390
External references
- oeis: A390392