Numbers in which all pairs of consecutive base-7 digits differ by 2.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =10a(7) =14a(8) =18a(9) =22a(10) =26a(11) =30a(12) =34a(13) =38a(14) =46a(15) =71a(16) =75a(17) =100a(18) =128a(19) =132a(20) =157a(21) =185a(22) =210a(23) =214a(24) =242a(25) =267a(26) =271a(27) =324a(28) =328a(29) =500