Numbers k such that 317*2^k+1 is prime.

Terms

a(0) =7a(1) =11a(2) =243a(3) =291a(4) =327a(5) =1211a(6) =7331a(7) =26775a(8) =101603a(9) =171071a(10) =284795a(11) =295195a(12) =323871a(13) =589755a(14) =833467a(15) =1047471