n written in fractional base 8/4.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =40a(9) =41a(10) =42a(11) =43a(12) =44a(13) =45a(14) =46a(15) =47a(16) =400a(17) =401a(18) =402a(19) =403a(20) =404a(21) =405a(22) =406a(23) =407a(24) =440a(25) =441a(26) =442a(27) =443a(28) =444a(29) =445