n written in fractional base 4/3.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =30a(5) =31a(6) =32a(7) =33a(8) =320a(9) =321a(10) =322a(11) =323a(12) =3210a(13) =3211a(14) =3212a(15) =3213a(16) =32100a(17) =32101a(18) =32102a(19) =32103a(20) =32130a(21) =32131a(22) =32132a(23) =32133a(24) =321020a(25) =321021a(26) =321022a(27) =321023a(28) =321310a(29) =321311