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

Terms

a(0) =1a(1) =3a(2) =4a(3) =8a(4) =9a(5) =12a(6) =15a(7) =19a(8) =23a(9) =24a(10) =33a(11) =75a(12) =92a(13) =128a(14) =139a(15) =140a(16) =167a(17) =235a(18) =284a(19) =504a(20) =524a(21) =779a(22) =804a(23) =912a(24) =1104a(25) =1439a(26) =4680a(27) =4875a(28) =5843a(29) =9033