Numbers k such that there exists i >= 1 such that k divides 3^3^i + 1.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =14a(5) =19a(6) =28a(7) =37a(8) =38a(9) =74a(10) =76a(11) =133a(12) =148a(13) =163a(14) =259a(15) =266a(16) =326a(17) =487a(18) =518a(19) =532a(20) =652a(21) =703a(22) =974a(23) =1036a(24) =1141a(25) =1297a(26) =1406a(27) =1459a(28) =1948a(29) =2282