Numbers whose base-10 representation has one more 0 than 9's.

Terms

a(0) =10a(1) =20a(2) =30a(3) =40a(4) =50a(5) =60a(6) =70a(7) =80a(8) =101a(9) =102a(10) =103a(11) =104a(12) =105a(13) =106a(14) =107a(15) =108a(16) =110a(17) =120a(18) =130a(19) =140a(20) =150a(21) =160a(22) =170a(23) =180a(24) =201a(25) =202a(26) =203a(27) =204a(28) =205a(29) =206