Continued fraction expansion with iterated 3-fold symmetry.

Terms

a(0) =0a(1) =1a(2) =1a(3) =23a(4) =1a(5) =2a(6) =1a(7) =18815a(8) =3a(9) =1a(10) =23a(11) =3a(12) =1a(13) =23a(14) =1a(15) =2a(16) =1a(18) =3a(19) =1a(20) =23a(21) =1a(22) =3a(23) =23a(24) =1a(25) =3a(26) =18815a(27) =1a(28) =2a(29) =1a(30) =23