Numbers k such that 89*2^k+1 is prime.

Terms

a(0) =1a(1) =7a(2) =9a(3) =21a(4) =37a(5) =61a(6) =589a(7) =711a(8) =1537a(9) =1921a(10) =3217a(11) =4237a(12) =26721a(13) =31297a(14) =58101a(15) =155251a(16) =225111a(17) =398359a(18) =472099a(19) =503479a(20) =543049a(21) =1272457a(22) =1338001a(23) =1943337a(24) =5519481