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A175099 Number of closed rectangles added at the n-th stage of the leftist toothpicks A151566. 1
0, 0, 0, 0, 1, 0, 0, 2, 3, 0, 0, 2, 2, 0, 0, 4, 7, 0, 0, 2, 2, 0, 0, 4, 6, 0, 0, 4, 4, 0, 0, 8, 15, 0, 0, 2, 2, 0, 0, 4, 6, 0, 0, 4, 4, 0, 0, 8, 14, 0, 0, 4, 4, 0, 0, 8, 12, 0, 0, 8, 8, 0, 0, 16, 31, 0, 0, 2, 2, 0, 0, 4, 6, 0, 0, 4, 4, 0, 0, 8, 14, 0, 0, 4, 4, 0, 0, 8, 12, 0, 0, 8, 8, 0, 0, 16, 30, 0, 0, 4, 4, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..101.

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

FORMULA

For a recurrence see A160018. - N. J. A. Sloane, Feb 07 2010

CROSSREFS

Cf. A160125, A175098

Sequence in context: A078332 A097109 A160018 * A151867 A262563 A170843

Adjacent sequences:  A175096 A175097 A175098 * A175100 A175101 A175102

KEYWORD

nonn

AUTHOR

R. J. Mathar, Feb 04 2010

STATUS

approved

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Last modified October 16 18:08 EDT 2018. Contains 316271 sequences. (Running on oeis4.)