Numbers whose consecutive digits differ by 6.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =9a(10) =17a(11) =28a(12) =39a(13) =60a(14) =71a(15) =82a(16) =93a(17) =171a(18) =282a(19) =393a(20) =606a(21) =717a(22) =828a(23) =939a(24) =1717a(25) =2828a(26) =3939a(27) =6060a(28) =7171a(29) =8282