Numbers with the property that all pairs of consecutive base-6 digits differ by more than 1.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =9a(6) =10a(7) =11a(8) =12a(9) =16a(10) =17a(11) =18a(12) =19a(13) =23a(14) =24a(15) =25a(16) =26a(17) =30a(18) =31a(19) =32a(20) =33a(21) =54a(22) =55a(23) =59a(24) =60a(25) =61a(26) =62a(27) =66a(28) =67a(29) =68