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A160163 First differences of A160162. 1
1, 1, 2, 4, 4, 2, 4, 6, 4, 4, 8, 12, 10, 6, 10, 10, 4, 4, 8, 12, 10, 8, 14, 16, 12, 16, 28, 34, 26, 20, 26, 18, 4, 4, 8, 12, 10, 8, 14, 16, 12, 16, 28, 34, 26, 22, 30, 24, 12, 16, 28, 34, 28, 30, 44, 44 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..56.

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

FORMULA

a(n) = A160159(n)/2.

CROSSREFS

Cf. A139250, A139251, A160158, A160159, A160162.

Sequence in context: A096832 A016588 A234247 * A263442 A206396 A206389

Adjacent sequences:  A160160 A160161 A160162 * A160164 A160165 A160166

KEYWORD

nonn

AUTHOR

Omar E. Pol, May 29 2009

EXTENSIONS

More terms from Colin Barker, Apr 19 2015

STATUS

approved

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Last modified January 17 10:30 EST 2019. Contains 319218 sequences. (Running on oeis4.)