Numbers k such that 2^k + 15 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =8a(7) =10a(8) =11a(9) =12a(10) =15a(11) =16a(12) =22a(13) =23a(14) =26a(15) =30a(16) =32a(17) =40a(18) =42a(19) =46a(20) =61a(21) =72a(22) =76a(23) =155a(24) =180a(25) =198a(26) =203a(27) =310a(28) =328a(29) =342