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A131271
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Ranks in natural order of 2^n increasing real numbers appearing in limit cycles of interval iterations, or Median Spiral Order.
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1
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1, 8, 4, 5, 2, 7, 3, 6, 1, 16, 8, 9, 4, 13, 5, 12, 2, 15, 7, 10, 3, 14, 6, 11
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| J. Demongeot, J. Waku, Some computational aspects of interval iterations and applications in demography and physiology, preprint 2007
J. Demongeot, J. Waku, Counter-examples for the population size growth in demography. Math. Pop. Studies, 12, 199-210 (2005).
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LINKS
| J. Demongeot, J. Waku, Counter-examples for the population size growth in demography, Math. Pop. Studies 12 (2005), 199-210.
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FORMULA
| a(n, 2k-1) = a(n-1, k), if we order the 2^n first integers a(n, 2k) = 2^n + 1 - a(n, 2k-1)
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CROSSREFS
| Sequence in context: A129105 A021546 A153620 * A093821 A197256 A195431
Adjacent sequences: A131268 A131269 A131270 * A131272 A131273 A131274
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KEYWORD
| fini,nonn
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AUTHOR
| J. Demongeot (Jacques.Demongeot(AT)imag.fr), Jun 24 2007
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