Numbers k such that 2^k + 27 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =10a(6) =13a(7) =14a(8) =16a(9) =40a(10) =41a(11) =44a(12) =86a(13) =110a(14) =125a(15) =133a(16) =134a(17) =145a(18) =154a(19) =184a(20) =194a(21) =301a(22) =308a(23) =320a(24) =685a(25) =1001a(26) =1066a(27) =1496a(28) =1633a(29) =2005