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A170878 First differences of A072272. 2
4, 0, 12, -12, 20, -8, 44, -56, 20, 0, 60, -68, 68, -24, 156, -212, 20, 0, 60, -60, 100, -40, 220, -288, 68, 0, 204, -228, 244, -88, 556, -768, 20, 0, 60, -60, 100, -40, 220, -280, 100, 0, 300, -340, 340, -120, 780, -1068, 68, 0, 204, -204, 340, -136, 748, -976, 244, 0, 732, -820, 868, -312, 1980, -2748 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..63.

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

Sequence in context: A273505 A273706 A273682 * A056460 A137523 A291108

Adjacent sequences:  A170875 A170876 A170877 * A170879 A170880 A170881

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Jan 07 2010, Apr 17 2010

STATUS

approved

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Last modified December 15 00:30 EST 2019. Contains 329988 sequences. (Running on oeis4.)