Numbers with the property that all pairs of consecutive base-9 digits differ by more than 2.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =13a(9) =14a(10) =15a(11) =16a(12) =17a(13) =23a(14) =24a(15) =25a(16) =26a(17) =27a(18) =33a(19) =34a(20) =35a(21) =36a(22) =37a(23) =43a(24) =44a(25) =45a(26) =46a(27) =47a(28) =53a(29) =54