Numbers n such that 289*2^n-1 is prime.

Terms

a(0) =1a(1) =3a(2) =13a(3) =21a(4) =25a(5) =33a(6) =73a(7) =93a(8) =115a(9) =127a(10) =397a(11) =1255a(12) =3751a(13) =3801a(14) =4771a(15) =8997a(16) =10063a(17) =11253a(18) =18663a(19) =27525a(20) =28009a(21) =34041a(22) =55693a(23) =60243a(24) =67891a(25) =77391a(26) =90201a(27) =501991a(28) =509401