Numbers k such that k^k == 1 (mod sigma(k)).

Terms

a(0) =1a(1) =2a(2) =8a(3) =9a(4) =36a(5) =128a(6) =576a(7) =625a(8) =900a(9) =1156a(10) =2304a(11) =2601a(12) =5185a(13) =6561a(14) =10082a(15) =10404a(16) =27225a(17) =32768a(18) =57600a(19) =117649a(20) =181476a(21) =260100a(22) =285156a(23) =367236a(24) =378225a(25) =443521a(26) =607825a(27) =617796a(28) =645248a(29) =656100