Smallest k such that phi(x) = k has exactly n solutions, n>=2.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =12a(5) =32a(6) =36a(7) =40a(8) =24a(9) =48a(10) =160a(11) =396a(12) =2268a(13) =704a(14) =312a(15) =72a(16) =336a(17) =216a(18) =936a(19) =144a(20) =624a(21) =1056a(22) =1760a(23) =360a(24) =2560a(25) =384a(26) =288a(27) =1320a(28) =3696a(29) =240