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A160419 a(n) = A160409(n+2)/2. 0
1, 2, 2, 2, 2, 2, 4, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..8.

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.]

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

CROSSREFS

Cf. A139250, A139251, A160160, A160161, A160406, A160407, A160408, A160409, A160418.

Sequence in context: A168260 A008737 A244460 * A152659 A180214 A263342

Adjacent sequences:  A160416 A160417 A160418 * A160420 A160421 A160422

KEYWORD

more,nonn

AUTHOR

Omar E. Pol, May 23 2009

STATUS

approved

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Last modified April 18 22:08 EDT 2019. Contains 322237 sequences. (Running on oeis4.)