Numbers k such that 417*2^k+1 is prime.

Terms

a(0) =2a(1) =4a(2) =7a(3) =8a(4) =11a(5) =12a(6) =15a(7) =16a(8) =19a(9) =24a(10) =28a(11) =51a(12) =59a(13) =62a(14) =63a(15) =64a(16) =75a(17) =79a(18) =132a(19) =338a(20) =355a(21) =518a(22) =692a(23) =806a(24) =1287a(25) =1618a(26) =1803a(27) =2715a(28) =2743a(29) =2834