Every run of digits of n in base 8 has length 2.

Terms

a(0) =9a(1) =18a(2) =27a(3) =36a(4) =45a(5) =54a(6) =63a(7) =576a(8) =594a(9) =603a(10) =612a(11) =621a(12) =630a(13) =639a(14) =1152a(15) =1161a(16) =1179a(17) =1188a(18) =1197a(19) =1206a(20) =1215a(21) =1728a(22) =1737a(23) =1746a(24) =1764a(25) =1773a(26) =1782a(27) =1791a(28) =2304a(29) =2313