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A212009 Number of toothpicks or D-toothpicks added at n-th stage in the toothpick structure of A212008. 3
0, 1, 4, 8, 16, 22, 20, 24, 36, 40, 32, 44, 56, 94, 60, 56, 76, 72, 32, 48, 72, 112, 132, 140, 136, 168, 112, 132, 140, 238, 148, 120, 156, 136, 32, 48, 72, 112, 132 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Essentially the first differences of A212008.

LINKS

Table of n, a(n) for n=0..38.

David Applegate, The movie version

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

Index entries for sequences related to toothpick sequences

FORMULA

It appears that a(2^k + 2) = 32, if k >= 3.

EXAMPLE

When written as an irregular triangle:

0;

1;

4;

8;

16,22;

20,24,36,40;

32,44,56,94,60,56,76,72;

32,48,72,112,132,140,136,168,112,132,140,238,148,120,156,136;

32,48,72,112,132,...

CROSSREFS

Cf. A139250, A139251, A194271, A194433, A194435, A194441, A194443, A194445, A220501.

Sequence in context: A312808 A249486 A129370 * A312809 A312810 A194271

Adjacent sequences:  A212006 A212007 A212008 * A212010 A212011 A212012

KEYWORD

nonn,tabf,more

AUTHOR

Omar E. Pol, Dec 15 2012

STATUS

approved

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Last modified October 18 01:04 EDT 2019. Contains 328135 sequences. (Running on oeis4.)