Numbers n such that (50^n - 1)/49 is prime.

A245442

Numbers n such that (50^n - 1)/49 is prime.

Terms

    a(0) =3a(1) =5a(2) =127a(3) =139a(4) =347a(5) =661a(6) =2203a(7) =6521a(8) =210319

External references