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 A057215 [1->01, 2->10, 3->01]-transform of 3-symbol Thue-Morse A026600. 2
 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Old name was: Analog of A026600 using instead of 1: 0,1; instead of 2: 1,0; instead of 3: 0,1. A nonperiodic sequence of 0 and 1, with one 0 and one 1 in every subsequence of three terms. From Michel Dekking, Apr 17 2019: (Start): (a(n)) is a morphic sequence, i.e., a letter-to-letter projection of a fixed point of a morphism. Let the morphism sigma be given by     1->123, 2->456, 3->345, 4->612, 5->561, 6->234, and let the letter-to-letter map delta be given by     1->0, 2->1, 3->1, 4->0, 5->0, 6->1. Then (a(n)) = delta(x), with x the fixed point of sigma starting with 1. This representation can be obtained by doubling 1,2 and 3, and renaming the resulting six letters as 1,2,3,4,5,6. (End) This sequence essentially equals A026605, which is its standard form: a(n) = A026605(n)-1 for all n. - Michel Dekking, Apr 18 2019 LINKS MATHEMATICA Flatten[ Nest[ Flatten[ # /. {1 -> {1, 2, 3}, 2 -> {2, 3, 1}, 3 -> {3, 1, 2}}] &, {1}, 4] /. {1 -> {0, 1}, 2 -> {1, 0}, 3 -> {0, 1}}] (* Robert G. Wilson v, Mar 09 2005 *) CROSSREFS Cf. A026600, A026605 Sequence in context: A287657 A079336 A288670 * A284905 A291197 A269927 Adjacent sequences:  A057212 A057213 A057214 * A057216 A057217 A057218 KEYWORD nonn AUTHOR Richard Blavy, Sep 24 2000 EXTENSIONS Name changed by Michel Dekking, Apr 17 2019 STATUS approved

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Last modified July 22 07:23 EDT 2019. Contains 325216 sequences. (Running on oeis4.)