%I A100619
%S A100619 1,2,3,1,1,1,2,1,2,1,2,3,1,1,2,3,1,1,2,3,1,1,1,2,1,2,3,1,1,1,2,1,2,3,1,
%T A100619 1,1,2,1,2,1,2,3,1,1,2,3,1,1,1,2,1,2,1,2,3,1,1,2,3,1,1,1,2,1,2,1,2,3,1,
%U A100619 1,2,3,1,1,2,3,1,1,1,2,1,2,3,1,1,1,2,1,2,1,2,3,1,1,2,3,1,1,2,3,1,1,1,2
%N A100619 Fixed point of the morphism 1 -> 12, 2 -> 31, 3 -> 1, starting from a(1) 
               = 1.
%C A100619 Sirvent comments that in spite of the similarity of this map to the one 
               in A092782, the two sequences have very different properties. They 
               have different complexities, different Rauzy fractals, etc.
%D A100619 V. F. Sirvent, Semigroups and the self-similar structure of the flipped 
               tribonacci substitution, Applied Math. Letters, 12 (1999), 25-29. 
               [Contains many further references.]
%t A100619 Nest[ Function[l, {Flatten[(l /. {1 -> {1, 2}, 2 -> {3, 1}, 3 -> {1}})]}], 
               {1}, 7] (from Robert G. Wilson v Feb 26 2005)
%Y A100619 Cf. A092782.
%Y A100619 Sequence in context: A086195 A086197 A139336 this_sequence A094006 A140188 
               A140737
%Y A100619 Adjacent sequences: A100616 A100617 A100618 this_sequence A100620 A100621 
               A100622
%K A100619 nonn,easy
%O A100619 1,2
%A A100619 N. J. A. Sloane (njas(AT)research.att.com), Dec 03 2004
%E A100619 More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 05 2004