Write n in base 4, then complement each digit (d -> 3-d) and juxtapose.

Terms

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