Numbers k such that 2^k + 25 is prime.

Terms

a(0) =2a(1) =4a(2) =6a(3) =8a(4) =10a(5) =20a(6) =22a(7) =34a(8) =70a(9) =92a(10) =112a(11) =118a(12) =236a(13) =250a(14) =378a(15) =438a(16) =570a(17) =654a(18) =800a(19) =1636a(20) =2848a(21) =4948a(22) =5670a(23) =6772a(24) =7494a(25) =8006a(26) =9056a(27) =11038a(28) =16268a(29) =21416