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A151896 Number of new cells turned ON at generation n in cellular automaton described in A151895. 6
0, 1, 4, 4, 4, 12, 4, 12, 12, 12, 20, 12, 20, 28, 4, 12, 12, 12, 28, 20, 28, 36, 36, 52, 44, 52, 52, 12, 28, 28, 28, 44, 44, 44, 76, 68, 84, 44, 52, 60, 52, 60, 52, 28, 60, 60, 68, 100, 44, 68, 84, 60, 92, 84, 76, 116, 84, 100, 92, 60, 60, 76, 92, 132, 100, 84 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
First differences of A151895. See that entry for much more information.
LINKS
David Applegate, The movie version
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, Illustration of initial terms (concentrating on a 90-degree sector)
FORMULA
We do not know of a recurrence or generating function.
CROSSREFS
Sequence in context: A219373 A337132 A151906 * A267191 A170897 A217771
KEYWORD
nonn
AUTHOR
EXTENSIONS
Revised by David Applegate and N. J. A. Sloane, Jan 21 2016
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)