Numbers that are not squarefree and whose Euler totient function is squarefree.

Terms

a(0) =4a(1) =9a(2) =18a(3) =49a(4) =98a(5) =121a(6) =242a(7) =529a(8) =961a(9) =1058a(10) =1849a(11) =1922a(12) =2209a(13) =3481a(14) =3698a(15) =4418a(16) =4489a(17) =5041a(18) =6241a(19) =6889a(20) =6962a(21) =8978a(22) =10082a(23) =10609a(24) =11449a(25) =12482a(26) =13778a(27) =17161a(28) =19321a(29) =21218