Numbers k such that 4^k - 2^k - 1 is prime.

Terms

a(0) =2a(1) =4a(2) =5a(3) =9a(4) =10a(5) =18a(6) =38a(7) =45a(8) =50a(9) =57a(10) =108a(11) =161a(12) =208a(13) =224a(14) =225a(15) =240a(16) =354a(17) =597a(18) =634a(19) =1008a(20) =1080a(21) =1468a(22) =1525a(23) =1560a(24) =3298a(25) =3329a(26) =3846a(27) =4129a(28) =5430a(29) =8616