Write n in base 8, then complement each digit (d -> 7-d) and juxtapose.

Terms

a(0) =6a(1) =5a(2) =4a(3) =3a(4) =2a(5) =1a(6) =0a(7) =6a(8) =7a(9) =6a(10) =6a(11) =6a(12) =5a(13) =6a(14) =4a(15) =6a(16) =3a(17) =6a(18) =2a(19) =6a(20) =1a(21) =6a(22) =0a(23) =5a(24) =7a(25) =5a(26) =6a(27) =5a(28) =5a(29) =5