Least k such that phi(k) has exactly n divisors.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =17a(5) =13a(6) =85a(7) =31a(8) =37a(9) =65a(10) =1285a(11) =61a(12) =4369a(13) =193a(14) =185a(15) =143a(16) =65537a(17) =181a(18) =327685a(19) =241a(20) =577a(21) =3281a(22) =5570645a(23) =403a(24) =1297a(25) =12289a(26) =1057a(27) =1037a(28) =286331153a(29) =779