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 A106698 Three-symbol substitution: characteristic polynomial: x^3-x^2-3*x-3. 0
 1, 2, 1, 2, 1, 2, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2, 1, 2, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2, 1, 2, 2, 3, 1, 2, 1, 2, 3, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2, 1, 2, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 3, 1, 2, 1, 2, 3, 1, 2, 1, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS FORMULA 1->{2, 3}, 2->{1, 2, 1}, 3->{2, 1, 2} MATHEMATICA s[1] = {2, 3}; s[2] = {1, 2, 1}; s[3] = {2, 1, 2}; t[a_] := Flatten[s /@ a]; p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]] aa = p[6] CROSSREFS Sequence in context: A025817 A109381 A058506 * A097848 A124830 A287820 Adjacent sequences:  A106695 A106696 A106697 * A106699 A106700 A106701 KEYWORD nonn,uned AUTHOR Roger L. Bagula, May 13 2005 STATUS approved

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