Numbers k such that phi(k) is a perfect 8th power.

Terms

a(0) =1a(1) =2a(2) =257a(3) =512a(4) =514a(5) =544a(6) =640a(7) =680a(8) =768a(9) =816a(10) =960a(11) =1020a(12) =65537a(13) =131072a(14) =131074a(15) =131584a(16) =139264a(17) =139808a(18) =163840a(19) =164480a(20) =174080a(21) =174760a(22) =196608a(23) =197376a(24) =208896a(25) =209712a(26) =245760a(27) =246720a(28) =261120a(29) =262140