Numbers k such that 3*7^k - 2 is prime.

Terms

a(0) =1a(1) =11a(2) =168a(3) =185a(4) =467a(5) =767a(6) =1400a(7) =1428a(8) =1736a(9) =2516a(10) =3275a(11) =3540a(12) =51156