Numbers with the property that all pairs of consecutive base-5 digits differ by 0 or 1.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =11a(8) =12a(9) =13a(10) =17a(11) =18a(12) =19a(13) =23a(14) =24a(15) =25a(16) =26a(17) =30a(18) =31a(19) =32a(20) =36a(21) =37a(22) =38a(23) =55a(24) =56a(25) =57a(26) =61a(27) =62a(28) =63a(29) =67