Numbers k such that phi(k) and cototient(k) are squares but k is not in A054755.

Terms

a(0) =1a(1) =468a(2) =1417a(3) =1872a(4) =2340a(5) =3145a(6) =4100a(7) =4212a(8) =7488a(9) =9360a(10) =14841a(11) =15588a(12) =16400a(13) =16848a(14) =20329a(15) =21060a(16) =29952a(17) =31417a(18) =37440a(19) =37908a(20) =45097a(21) =49833a(22) =58500a(23) =62352a(24) =63529a(25) =63945a(26) =65600a(27) =67392a(28) =69700a(29) =78625