Numbers n such that (22^n - 1)/21 is prime.
A127997
Numbers n such that (22^n - 1)/21 is prime.
Terms
- a(0) =2a(1) =5a(2) =79a(3) =101a(4) =359a(5) =857a(6) =4463a(7) =9029a(8) =27823
External references
- oeis: A127997
A127997
Numbers n such that (22^n - 1)/21 is prime.