Numbers with the property that all pairs of consecutive base-7 digits differ by 1.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =9a(8) =15a(9) =17a(10) =23a(11) =25a(12) =31a(13) =33a(14) =39a(15) =41a(16) =47a(17) =50a(18) =64a(19) =66a(20) =105a(21) =107a(22) =121a(23) =123a(24) =162a(25) =164a(26) =178a(27) =180a(28) =219a(29) =221