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Search: id:A106748
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| A106748 |
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Define the morphism f: 1->113, 2->13, 3->2 and let a(0) = 1; then a(n+1) = f(a(n)). |
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7
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| 1, 113, 1131132, 1131132113113213, 113113211311321311311321131132131132, 11311321131132131131132113113213113211311321131132131131132113113213113211311321\ 3
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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E. Bombieri and J. Taylor, Which distribution of matter diffracts? An initial investigation, in International Workshop on Aperiodic Crystals (Les Houches, 1986), J. de Physique, Colloq. C3, 47 (1986), C3-19 to C3-28.
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MATHEMATICA
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FromDigits /@ NestList[ Flatten[ # /. {1 -> {1, 1, 3}, 2 -> {1, 3}, 3 -> 2}] &, {1}, 5] (from Robert G. Wilson v (rgwv(AT)rgwv.com), May 17 2005)
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CROSSREFS
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Cf. A106749.
Sequence in context: A012031 A090480 A152496 this_sequence A122503 A076150 A138693
Adjacent sequences: A106745 A106746 A106747 this_sequence A106749 A106750 A106751
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), May 16 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), May 17 2005
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