
0, 1, 2, 4, 6, 8, 12, 14, 14, 18, 18, 20, 24, 24, 38, 34, 42, 34, 26, 28, 32, 38, 52, 54, 64, 58, 68, 60, 60, 50, 66, 70, 70, 74, 50, 52, 60, 54, 64, 66, 84, 88, 116, 106, 132, 100, 136, 126, 140, 106, 118, 100, 122, 106, 138, 114, 138, 132, 152, 156, 176, 158, 190, 166, 158, 154, 98, 88, 132, 82, 124, 94, 112
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OFFSET

0,3


COMMENTS

Number of Ltoothpicks added to the Ltoothpick structure of A172310 at the nth stage.


LINKS

Table of n, a(n) for n=0..72.
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), 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


CROSSREFS

Cf. A139250, A139251, A160121, A160171, A160173, A161207, A161329, A172310.
Sequence in context: A274262 A092990 A323505 * A103829 A164530 A058817
Adjacent sequences: A172308 A172309 A172310 * A172312 A172313 A172314


KEYWORD

nonn


AUTHOR

Omar E. Pol, Jan 31 2010


EXTENSIONS

More terms from Nathaniel Johnston, Nov 15 2010
Corrected by David Applegate and Omar E. Pol. More terms beyond a(22) from David Applegate, Mar 26 2016


STATUS

approved

