Numbers k such that 7^k - 5^k - 1 is prime.

Terms

a(0) =2a(1) =5a(2) =6a(3) =13a(4) =61a(5) =275a(6) =385a(7) =510a(8) =3559a(9) =9131a(10) =13075a(11) =13829a(12) =28530a(13) =29929a(14) =31555a(15) =39862