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A160171 First differences of X-toothpicks numbers A160170. 5
0, 1, 4, 8, 8, 24, 32, 32, 56, 80, 80, 88, 112, 160, 168, 240, 224, 344, 320, 320, 344, 448, 528, 536, 704, 704, 872, 736, 880, 840, 1024, 1088, 1256, 1328, 1392, 1416, 1440, 1504, 1656 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
Number of X-toothpicks added at n-th stage to the three-dimensional X-toothpick structure of A160170.
For another version see A170875.
LINKS
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.]
CROSSREFS
X-toothpick sequence: A160170.
Sequence in context: A019197 A066106 A030296 * A195752 A095806 A096872
KEYWORD
nonn
AUTHOR
Omar E. Pol, May 03 2009, Dec 13 2010
EXTENSIONS
More terms (a(6)-a(38)) based on Email from R. J. Mathar dated on Jan 10 2010.
STATUS
approved

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Last modified April 17 17:01 EDT 2024. Contains 371765 sequences. (Running on oeis4.)