

A160171


First differences of Xtoothpicks 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
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OFFSET

0,3


COMMENTS

Number of Xtoothpicks added at nth stage to the threedimensional Xtoothpick 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), 157191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n1)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

Xtoothpick 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,changed


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



