Numbers m such that 3*2^m - 1 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =7a(7) =11a(8) =18a(9) =34a(10) =38a(11) =43a(12) =55a(13) =64a(14) =76a(15) =94a(16) =103a(17) =143a(18) =206a(19) =216a(20) =306a(21) =324a(22) =391a(23) =458a(24) =470a(25) =827a(26) =1274a(27) =3276a(28) =4204a(29) =5134