%I A036581
%S A036581 0,2,1,0,1,2,0,2,1,2,0,1,0,2,1,0,1,2,0,1,0,2,1,2,0,2,1,0,1,2,0,2,1,
%T A036581 2,0,1,0,2,1,2,0,2,1,0,1,2,0,1,0,2,1,0,1,2,0,2,1,2,0,1,0,2,1,0,1,2,
%U A036581 0,1,0,2,1,2,0,2,1,0,1,2,0,1,0,2,1,0,1,2,0,2,1,2,0,1,0,2,1,2,0,2,1
%N A036581 Ternary Thue-Morse sequence: closed under a->abc, b->ac, c->b.
%C A036581 This sequence and A108694 are squarefree (they do not contain any substring 
               XX). - R. William Gosper (rwg(AT)osots.com), Jul 22 2005
%C A036581 Trajectory of 1 under the morphism 0 -> 021, 1 -> 2 & 2 -> 01. - Robert 
               G. Wilson v, (rgwv(AT)rgwv.com), Apr 06 2008
%D A036581 M. Lothaire, Combinatorics on Words. Addison-Wesley, Reading, MA, 1983, 
               p. 26.
%F A036581 a(n) = A010060(n+1) - A010060(n) - 1 mod 3. - R. William Gosper (rwg(AT)osots.com), 
               Jul 22 2005
%t A036581 Nest[ # /. {0 -> {0, 2, 1}, 1 -> {2}, 2 -> {0, 1}} &, {0}, 7] // Flatten 
               (* Robert G. Wilson v *) - Robert G. Wilson v, (rgwv(AT)rgwv.com), 
               Apr 06 2008
%Y A036581 Cf. A036583, A108694.
%Y A036581 Sequence in context: A069850 A141581 A108964 this_sequence A135055 A035148 
               A155077
%Y A036581 Adjacent sequences: A036578 A036579 A036580 this_sequence A036582 A036583 
               A036584
%K A036581 nonn
%O A036581 0,2
%A A036581 N. J. A. Sloane (njas(AT)research.att.com).