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A173069 a(n) = A139251(n) - A105321(n). 1
-1, -2, -2, -2, -2, -2, 0, 0, -2, -2, 0, 0, 0, 4, 12, 8, -2, -2, 0, 0, 0, 4, 12, 8, 0, 4, 12, 12, 16, 36, 56, 32, -2, -2, 0, 0, 0, 4, 12, 8, 0, 4, 12, 12, 16, 36, 56, 32, 0, 4, 12, 12, 16, 36, 56, 36, 16, 36, 60, 64, 92, 160, 192, 96, -2, -2, 0, 0, 0, 4, 12, 8, 0, 4, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..74.

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. A105321, A139250, A139251, A173522.

Sequence in context: A242050 A037869 A037868 * A059963 A137934 A133738

Adjacent sequences:  A173066 A173067 A173068 * A173070 A173071 A173072

KEYWORD

sign

AUTHOR

Omar E. Pol, May 29 2010

EXTENSIONS

More terms from Nathaniel Johnston, Nov 15 2010

STATUS

approved

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Last modified July 30 16:31 EDT 2021. Contains 346359 sequences. (Running on oeis4.)