A036584 Ternary Thue-Morse sequence: closed under a->abc, b->ac, c->b.

3, 1, 2, 3, 2, 1, 3, 1, 2, 1, 3, 2, 3, 1, 2, 3, 2, 1, 3, 2, 3, 1, 2, 1, 3, 1, 2, 3, 2, 1, 3, 1, 2, 1, 3, 2, 3, 1, 2, 1, 3, 1, 2, 3, 2, 1, 3, 2, 3, 1, 2, 3, 2, 1, 3, 1, 2, 1, 3, 2, 3, 1, 2, 3, 2, 1, 3, 2, 3, 1, 2, 1, 3, 1, 2, 3, 2, 1, 3, 2, 3, 1, 2, 3, 2, 1, 3, 1, 2, 1, 3, 2, 3, 1, 2, 1, 3, 1, 2

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

References

• M. Lothaire, Combinatorics on Words. Addison-Wesley, Reading, MA, 1983, p. 26.

Links

• Robert Israel, Table of n, a(n) for n = 0..10000

Programs

Maple

S:= [3]:
Q:= {3=(3,1,2),1=(3,2),2=1}:
while nops(S) < 100 do S:= subs(Q,S) od:
S;