Numbers k such that (31^k - 1)/30 is prime.
A128002
Numbers k such that (31^k - 1)/30 is prime.
Terms
- a(0) =7a(1) =17a(2) =31a(3) =5581a(4) =9973a(5) =54493a(6) =101111a(7) =535571
External references
- oeis: A128002
A128002
Numbers k such that (31^k - 1)/30 is prime.