Numbers k such that |2^k - 57| is prime.

Terms

a(0) =2a(1) =4a(2) =6a(3) =7a(4) =8a(5) =10a(6) =16a(7) =19a(8) =22a(9) =28a(10) =43a(11) =46a(12) =56a(13) =58a(14) =62a(15) =67a(16) =74a(17) =82a(18) =140a(19) =160a(20) =316a(21) =346a(22) =376a(23) =454a(24) =458a(25) =487a(26) =580a(27) =607a(28) =1018a(29) =1579