
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: A092990 A323505 A350355 * 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

