Numbers k such that 389*2^k+1 is prime.

Terms

a(0) =11a(1) =57a(2) =59a(3) =115a(4) =299a(5) =347a(6) =715a(7) =3845a(8) =5157a(9) =16945a(10) =27949a(11) =66379a(12) =142649a(13) =233985a(14) =572625a(15) =976169a(16) =1186577a(17) =1824385a(18) =2916499a(19) =3019025