Least prime p such that p*6^n +/- 1 are primes.

Terms

a(0) =2a(1) =2a(2) =2a(3) =2a(4) =47a(5) =3a(6) =53a(7) =677a(8) =823a(9) =227a(10) =1907a(11) =1103a(12) =17a(13) =163a(14) =2693a(15) =1213a(16) =277a(17) =2767a(18) =887a(19) =8353a(20) =1013a(21) =773a(22) =6967a(23) =1423a(24) =2593a(25) =9643a(26) =157a(27) =18013a(28) =263a(29) =2137