Numbers whose set of base-10 digits is {0,6}.

Terms

a(0) =0a(1) =6a(2) =60a(3) =66a(4) =600a(5) =606a(6) =660a(7) =666a(8) =6000a(9) =6006a(10) =6060a(11) =6066a(12) =6600a(13) =6606a(14) =6660a(15) =6666a(16) =60000a(17) =60006a(18) =60060a(19) =60066a(20) =60600a(21) =60606a(22) =60660a(23) =60666a(24) =66000a(25) =66006a(26) =66060a(27) =66066a(28) =66600a(29) =66606