Squares k which are divisible by phi(k).

Terms

a(0) =1a(1) =4a(2) =16a(3) =36a(4) =64a(5) =144a(6) =256a(7) =324a(8) =576a(9) =1024a(10) =1296a(11) =2304a(12) =2916a(13) =4096a(14) =5184a(15) =9216a(16) =11664a(17) =16384a(18) =20736a(19) =26244a(20) =36864a(21) =46656a(22) =65536a(23) =82944a(24) =104976a(25) =147456a(26) =186624a(27) =236196a(28) =262144a(29) =331776