Numbers k such that 3*2^k + 1 is prime.

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =8a(5) =12a(6) =18a(7) =30a(8) =36a(9) =41a(10) =66a(11) =189a(12) =201a(13) =209a(14) =276a(15) =353a(16) =408a(17) =438a(18) =534a(19) =2208a(20) =2816a(21) =3168a(22) =3189a(23) =3912a(24) =20909a(25) =34350a(26) =42294a(27) =42665a(28) =44685a(29) =48150