Numbers k that divide 4^k + 3^k.

Terms

a(0) =1a(1) =7a(2) =49a(3) =343a(4) =2401a(5) =2653a(6) =16807a(7) =18571a(8) =117649a(9) =129997a(10) =823543a(11) =909979a(12) =1005487a(13) =4941601a(14) =5764801a(15) =6369853a(16) =7038409a(17) =34591207a(18) =40353607a(19) =44588971a(20) =49268863a(21) =236474833a(22) =242138449a(23) =282475249a(24) =312122797a(25) =344882041a(26) =381079573a(27) =1655323831a(28) =1694969143a(29) =1872866779