First k>n such that k | n^k + n.

Terms

a(0) =1a(1) =2a(2) =6a(3) =4a(4) =10a(5) =6a(6) =14a(7) =8a(8) =12a(9) =10a(10) =22a(11) =12a(12) =15a(13) =14a(14) =30a(15) =16a(16) =34a(17) =18a(18) =38a(19) =20a(20) =28a(21) =22a(22) =46a(23) =24a(24) =28a(25) =26a(26) =54a(27) =28a(28) =35a(29) =30