Numbers k such that phi(k) is a perfect 9th power.

Terms

a(0) =1a(1) =2a(2) =771a(3) =1024a(4) =1028a(5) =1088a(6) =1280a(7) =1360a(8) =1536a(9) =1542a(10) =1632a(11) =1920a(12) =2040a(13) =327685a(14) =524288a(15) =524296a(16) =526336a(17) =557056a(18) =559232a(19) =655360a(20) =655370a(21) =657920a(22) =696320a(23) =699040a(24) =786432a(25) =786444a(26) =789504a(27) =835584a(28) =838848a(29) =983040