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A194445 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A194444. 9
0, 1, 2, 4, 4, 4, 8, 11, 8, 4, 8, 16, 24, 12, 20, 25, 16, 4, 8, 16, 24, 28, 36, 42, 44, 20, 24, 40, 64, 32, 44, 53, 32, 4, 8, 16, 24, 28, 36, 44, 52, 42, 48, 60, 100, 68, 84, 83, 84, 28, 24, 44, 72, 84, 104, 116, 132, 54, 56, 92, 144, 72, 92, 109, 64, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Essentially the first differences of A194444.

First differs from A220525 at a(13). - Omar E. Pol, Mar 23 2013

LINKS

Table of n, a(n) for n=0..65.

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+1) = 4, if k >= 1.

a(n) = A194435(n)/4. - Omar E. Pol, Mar 23 2013

EXAMPLE

Contribution from Omar E. Pol, Dec 05 2012 (Start):

Triangle begins:

0;

1;

2;

4,4;

4,8,11,8;

4,8,16,24,12,20,25,16;

4,8,16,24,28,36,42,44,20,24,40,64,32,44,53,32;

(End)

CROSSREFS

Row lengths give 1 together with A011782. Right border gives 0 together with A000079.

Cf. A139250, A139251, A172311, A182635, A182839, A194271, A194433, A194435, A194441, A194443, A194444, A212009.

Sequence in context: A076345 A231349 A170893 * A220525 A160809 A139251

Adjacent sequences:  A194442 A194443 A194444 * A194446 A194447 A194448

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Aug 24 2011

EXTENSIONS

More terms from Omar E. Pol, Mar 23 2013

STATUS

approved

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Last modified October 22 18:55 EDT 2018. Contains 316500 sequences. (Running on oeis4.)