Numbers k such that 69*2^k+1 is prime.

Terms

a(0) =1a(1) =2a(2) =10a(3) =14a(4) =19a(5) =26a(6) =50a(7) =55a(8) =145a(9) =515a(10) =842a(11) =1450a(12) =2159a(13) =2290a(14) =2306a(15) =2335a(16) =3379a(17) =4025a(18) =4825a(19) =7850a(20) =9194a(21) =10409a(22) =18743a(23) =20993a(24) =34433a(25) =40691a(26) =69119a(27) =172349a(28) =211226a(29) =353818