Positive integers k such that k | (12^k + 1).

Terms

a(0) =1a(1) =13a(2) =169a(3) =1027a(4) =2197a(5) =13351a(6) =28561a(7) =81133a(8) =173563a(9) =371293a(10) =468481a(11) =685633a(12) =1054729a(13) =2256319a(14) =2890927a(15) =4826809a(16) =6090253a(17) =6409507a(18) =8913229a(19) =13711477a(20) =29332147a(21) =37009999a(22) =37582051a(23) =54165007a(24) =62748517a(25) =79173289a(26) =83323591a(27) =115871977a(28) =178249201a(29) =228383233