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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

Table of n, a(n) for n=0..38.

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

Index entries for sequences related to toothpick sequences

CROSSREFS

X-toothpick sequence: A160170.

Cf. A139250, A139251, A160120, A160121, A160160, A160161, A170875.

Sequence in context: A019197 A066106 A030296 * A195752 A095806 A096872

Adjacent sequences:  A160168 A160169 A160170 * A160172 A160173 A160174

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 March 22 05:25 EDT 2019. Contains 321406 sequences. (Running on oeis4.)