Numbers k such that 311*2^k+1 is prime.

Terms

a(0) =9a(1) =29a(2) =35a(3) =105a(4) =125a(5) =131a(6) =179a(7) =359a(8) =2735a(9) =28199a(10) =47349a(11) =64485a(12) =1094135a(13) =1171199a(14) =1323071a(15) =2798459a(16) =3037565a(17) =3270759a(18) =3282455