Numbers k such that 125*2^k+1 is prime.

Terms

a(0) =1a(1) =5a(2) =7a(3) =17a(4) =25a(5) =35a(6) =67a(7) =281a(8) =331a(9) =491a(10) =581a(11) =941a(12) =1205a(13) =1279a(14) =1411a(15) =1631a(16) =1895a(17) =2735a(18) =3475a(19) =13955a(20) =50491a(21) =68819a(22) =423155a(23) =432719a(24) =507637a(25) =701981a(26) =924085a(27) =1107425a(28) =2071555a(29) =2369461