Numbers whose base-9 expansion has no run of digits with length < 2.

Terms

a(0) =10a(1) =20a(2) =30a(3) =40a(4) =50a(5) =60a(6) =70a(7) =80a(8) =91a(9) =182a(10) =273a(11) =364a(12) =455a(13) =546a(14) =637a(15) =728a(16) =810a(17) =820a(18) =830a(19) =840a(20) =850a(21) =860a(22) =870a(23) =880a(24) =890a(25) =1620a(26) =1630a(27) =1640a(28) =1650a(29) =1660