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A188345 Number of diamonds present in the n-th generation of the Q-toothpick sequence A187210. 4
0, 0, 0, 0, 0, 3, 5, 5, 11, 21, 29, 29, 35, 43, 49, 53, 75, 105, 121, 121, 127, 135, 141, 145, 167, 195, 209, 213, 231, 251, 265, 293, 367, 445, 477, 477, 483, 491, 497, 501, 523, 551, 565, 569, 587, 607, 621, 649, 723, 799 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

COMMENTS

See A187210 for a description of the different shapes that appear in the Q-toothpick sequence.

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 0..181

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.]

Nathaniel Johnston, The Q-Toothpick Cellular Automaton

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

CROSSREFS

Cf. A187210, A188344, A188346.

Sequence in context: A266505 A118132 A089167 * A028265 A084041 A028254

Adjacent sequences:  A188342 A188343 A188344 * A188346 A188347 A188348

KEYWORD

nonn

AUTHOR

Nathaniel Johnston, Mar 28 2011

STATUS

approved

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Last modified March 29 18:26 EDT 2020. Contains 333116 sequences. (Running on oeis4.)