Numbers k such that 4^k + 25 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =10a(6) =11a(7) =17a(8) =35a(9) =46a(10) =56a(11) =59a(12) =118a(13) =125a(14) =189a(15) =219a(16) =285a(17) =327a(18) =400a(19) =818a(20) =1424a(21) =2474a(22) =2835a(23) =3386a(24) =3747a(25) =4003a(26) =4528a(27) =5519a(28) =8134a(29) =10708