Numbers k such that phi(x) = k has exactly 7 solutions.

Terms

a(0) =32a(1) =132a(2) =156a(3) =544a(4) =912a(5) =924a(6) =1012a(7) =1044a(8) =1140a(9) =1452a(10) =1464a(11) =1472a(12) =1476a(13) =1572a(14) =1664a(15) =1764a(16) =2076a(17) =2100a(18) =2232a(19) =2424a(20) =2580a(21) =2624a(22) =2652a(23) =3096a(24) =3248a(25) =3336a(26) =3444a(27) =3660a(28) =3996a(29) =4488