Numbers k such that 55*2^k+1 is prime.

Terms

a(0) =4a(1) =8a(2) =16a(3) =22a(4) =32a(5) =94a(6) =220a(7) =244a(8) =262a(9) =286a(10) =344a(11) =356a(12) =392a(13) =1996a(14) =2744a(15) =5158a(16) =6964a(17) =13484a(18) =15164a(19) =197350a(20) =300632a(21) =309560a(22) =363892a(23) =673708a(24) =1177924a(25) =1308148a(26) =1669798