Values taken by reduced totient function psi(n).

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =8a(5) =10a(6) =12a(7) =16a(8) =18a(9) =20a(10) =22a(11) =24a(12) =28a(13) =30a(14) =32a(15) =36a(16) =40a(17) =42a(18) =44a(19) =46a(20) =48a(21) =52a(22) =54a(23) =56a(24) =58a(25) =60a(26) =64a(27) =66a(28) =70a(29) =72