Numbers n such that phi(n)/n = 16/41.

Terms

a(0) =410a(1) =820a(2) =1640a(3) =2050a(4) =3280a(5) =4100a(6) =6560a(7) =8200a(8) =10250a(9) =13120a(10) =16400a(11) =16810a(12) =20500a(13) =26240a(14) =32800a(15) =33620a(16) =41000a(17) =51250a(18) =52480a(19) =65600a(20) =67240a(21) =82000a(22) =84050a(23) =102500a(24) =104960a(25) =131200a(26) =134480a(27) =164000a(28) =168100a(29) =205000