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0, 1, 2, 4, 4, 4, 8, 8, 4, 8, 12, 12, 16, 12
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..13.
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS
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CROSSREFS
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Cf. A139250, A172304, A172305, A172306, A172308, A172309, A172310, A172311, A172312, A172313.
Sequence in context: A023820 A225355 A117726 * A108039 A103228 A076340
Adjacent sequences: A172304 A172305 A172306 * A172308 A172309 A172310
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KEYWORD
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more,nonn
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AUTHOR
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Omar E. Pol, Feb 06 2010
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STATUS
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approved
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