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A000360
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From a fat-fractal triangle which happens to be a self-replicating tiling.
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3
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1, 0, 1, 1, 1, 1, 2, 0, 2, 2, 2, 1, 3, 1, 2, 1, 2, 2, 4, 1, 4, 3, 3, 1, 4, 2, 4, 2, 3, 2, 3, 0, 3, 3, 4, 2, 6, 3, 5, 2, 5, 4, 7, 2, 6, 4, 4, 1, 5, 3, 6, 3, 6, 4, 6, 1, 5, 4, 5, 2, 5, 2, 3, 1, 3, 3, 6, 2, 7, 5, 6, 2, 8, 5, 9, 4, 8, 5, 7, 1, 7, 6, 9, 4, 11, 6, 9, 3, 8, 6, 10, 3, 8, 5, 5, 1, 6, 4, 8, 4, 9, 6, 9, 2
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,7
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REFERENCES
| Melvyn J. Lafitte, Sur l'Effet Noa`h en Geometrie, rapport a l'INPI, Mars 1995.
Melvyn J. Lafitte, Ensembles Auto-Similaires d'Interieur Non-Vide, Preprint Hiver 1997, Chaire de Geometrie, Departement de Mathematiques, Ecole Polytechnique Federale de Lausanne, Switzerland.
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LINKS
| T. D. Noe, Table of n, a(n) for n=0..10000
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FORMULA
| a(0) = 1, a(2n) = a(n) + a(n-1), a(2n+1) = a(n) + 1 - (n-1 mod 3). - Ralf Stephan (ralf(AT)ark.in-berlin.de), Oct 05 2003
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CROSSREFS
| Related to A002487 by new(3n)=(old(3n)+1)/2, new(3n+1)=(old(3n+1)-1)/2, new(3n+2)=old(3n+2)/2. Cf. A000361, A000876.
Sequence in context: A127504 A047917 A144569 * A023556 A044944 A044945
Adjacent sequences: A000357 A000358 A000359 * A000361 A000362 A000363
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KEYWORD
| nonn,nice,easy,eigen
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AUTHOR
| Melvyn Jeremie Lafitte (mjlafitte(AT)gmail.com)
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EXTENSIONS
| More terms from David W. Wilson (davidwwilson(AT)comcast.net), Aug 30, 2000
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