Numbers n such that phi(n) is a proper substring of n.

Terms

a(0) =1320a(1) =1640a(2) =1768a(3) =1996a(4) =2640a(5) =3960a(6) =13200a(7) =16400a(8) =19984a(9) =19996a(10) =26400a(11) =39600a(12) =132000a(13) =164000a(14) =199996a(15) =264000a(16) =396000a(17) =1320000a(18) =1640000a(19) =1999936a(20) =2640000a(21) =3960000a(22) =13200000a(23) =16400000a(24) =16666240a(25) =17999488a(26) =18515584a(27) =19999984a(28) =19999996