Numbers k such that 15^k - 2 is a prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =7a(4) =12a(5) =17a(6) =19a(7) =51a(8) =65a(9) =550a(10) =1460a(11) =1641a(12) =7035a(13) =18002a(14) =20963a(15) =21163a(16) =42563a(17) =94906a(18) =148048