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A161418 Number of triangles in the Y-toothpick structure after n rounds. 5
0, 0, 0, 0, 6, 6, 12, 12, 24, 30 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..9.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata

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

CROSSREFS

Cf. A139250, A160120, A160124, A161419, A161828, A161836.

Sequence in context: A168328 A176569 A127402 * A124691 A112437 A122223

Adjacent sequences:  A161415 A161416 A161417 * A161419 A161420 A161421

KEYWORD

more,nonn

AUTHOR

Omar E. Pol, Jun 21 2009

STATUS

approved

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Last modified February 24 03:49 EST 2018. Contains 299595 sequences. (Running on oeis4.)