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 A105791 Trajectory of 1 under the morphism 1->{1, 2, 4, 2, 1}, 2->{4, 3, 1, 3, 4}, 3->{2, 1, 3, 1, 2}, 4->{3, 4, 2, 4, 3}. 0
 1, 2, 4, 2, 1, 4, 3, 1, 3, 4, 3, 4, 2, 4, 3, 4, 3, 1, 3, 4, 1, 2, 4, 2, 1, 3, 4, 2, 4, 3, 2, 1, 3, 1, 2, 1, 2, 4, 2, 1, 2, 1, 3, 1, 2, 3, 4, 2, 4, 3, 2, 1, 3, 1, 2, 3, 4, 2, 4, 3, 4, 3, 1, 3, 4, 3, 4, 2, 4, 3, 2, 1, 3, 1, 2, 3, 4, 2, 4, 3, 2, 1, 3, 1, 2, 1, 2, 4, 2, 1, 2, 1, 3, 1, 2, 3, 4, 2, 4, 3, 1, 2, 4, 2, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Edgar-Peano substitution of 4 symbols taken 5 at a time, fourth type: characteristic polynomial = -x^5+5*x^3-3*x^2+15*x. LINKS F. M. Dekking, Recurrent Sets, Advances in Mathematics, vol. 44, no.1, April 1982, page 85, section 4.1 G. A. Edgar and Jeffery Golds, A Fractal Dimension Estimate for a Graph-Directed IFS of Non-Similarities, arXiv:math/9806039 [math.CA], 1991 MATHEMATICA s[1] = {1, 2, 3, 2, 1}; s[2] = {4, 3, 2, 3, 4}; s[3] = {2, 1, 4, 1, 2}; s[4] = {3, 4, 1, 4, 3}; s[5] = {} t[a_] := Flatten[s /@ a]; p[0] = {1}; p[1] = t[p[0]]; p[n_] := t[p[n - 1]]; aa = p[3] CROSSREFS Sequence in context: A079046 A079045 A021417 * A116515 A037178 A077748 Adjacent sequences:  A105788 A105789 A105790 * A105792 A105793 A105794 KEYWORD nonn AUTHOR Roger L. Bagula, May 04 2005 EXTENSIONS Edited by N. J. A. Sloane, Aug 31 2006 STATUS approved

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Last modified October 20 15:44 EDT 2017. Contains 293626 sequences.