Composite numbers n such that n - phi(n) is a power of 10.

Terms

a(0) =1320a(1) =1640a(2) =1768a(3) =1996a(4) =13200a(5) =16400a(6) =19984a(7) =19996a(8) =132000a(9) =164000a(10) =199996a(11) =1320000a(12) =1640000a(13) =1999936a(14) =13200000a(15) =16400000a(16) =16666240a(17) =17999488a(18) =18515584a(19) =19999984a(20) =19999996a(21) =132000000a(22) =164000000a(23) =164296960a(24) =166662400a(25) =199999936a(26) =199999984a(27) =1320000000