Numbers k such that 17*2^k + 1 is prime.

Terms

a(0) =3a(1) =15a(2) =27a(3) =51a(4) =147a(5) =243a(6) =267a(7) =347a(8) =471a(9) =747a(10) =2163a(11) =3087a(12) =5355a(13) =6539a(14) =7311a(15) =99231a(16) =824451a(17) =1388355a(18) =1990299a(19) =8636199