n written in fractional base 9/6.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =60a(10) =61a(11) =62a(12) =63a(13) =64a(14) =65a(15) =66a(16) =67a(17) =68a(18) =630a(19) =631a(20) =632a(21) =633a(22) =634a(23) =635a(24) =636a(25) =637a(26) =638a(27) =6300a(28) =6301a(29) =6302