Numbers k such that (23^k - 3^k)/20 is prime.
A382391
Numbers k such that (23^k - 3^k)/20 is prime.
Terms
- a(0) =3a(1) =7a(2) =31a(3) =47a(4) =109a(5) =151a(6) =223a(7) =463a(8) =739a(9) =6427a(10) =17581a(11) =30517
External references
- oeis: A382391
A382391
Numbers k such that (23^k - 3^k)/20 is prime.