Numbers k such that k^k = k (mod prime(k)).

Terms

a(0) =1a(1) =4a(2) =169a(3) =391a(4) =1546a(5) =16761a(6) =18278a(7) =20201a(8) =21775a(9) =31120a(10) =126882a(11) =178465a(12) =9502273a(13) =10553442a(14) =24677776a(15) =56923413a(16) =422766345a(17) =1759518201a(18) =4152696703a(19) =6800832991a(20) =14421293461a(21) =106195400697a(22) =667339219893a(23) =915091102299