Numbers k such that 6*3^k + 1 is prime.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =5a(5) =8a(6) =15a(7) =16a(8) =29a(9) =53a(10) =56a(11) =59a(12) =64a(13) =131a(14) =179a(15) =319a(16) =695a(17) =781a(18) =821a(19) =896a(20) =1251a(21) =1453a(22) =4216a(23) =5479a(24) =6224a(25) =7841a(26) =12095a(27) =13781a(28) =17719a(29) =43955