Numbers != 2 (mod 4) listed in order of increasing totient function phi (A000010).

Terms

a(0) =1a(1) =3a(2) =4a(3) =5a(4) =8a(5) =12a(6) =7a(7) =9a(8) =15a(9) =16a(10) =20a(11) =24a(12) =11a(13) =13a(14) =21a(15) =28a(16) =36a(17) =17a(18) =32a(19) =40a(20) =48a(21) =60a(22) =19a(23) =27a(24) =25a(25) =33a(26) =44a(27) =23a(28) =35a(29) =39