Numbers k such that k | 7^k + 7.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =8a(5) =14a(6) =28a(7) =35a(8) =56a(9) =91a(10) =172a(11) =175a(12) =616a(13) =742a(14) =904a(15) =946a(16) =1204a(17) =1267a(18) =1288a(19) =2275a(20) =2486a(21) =4795a(22) =5551a(23) =7288a(24) =10396a(25) =10696a(26) =16426a(27) =16471a(28) =18536a(29) =31675