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A220497 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A220496. 2
0, 1, 2, 4, 4, 4, 4, 7, 8, 4, 4, 8, 8, 8, 8, 13, 16, 4, 4, 8, 8, 8, 8, 14, 16, 8, 8, 16, 16, 16, 16, 25, 32, 4, 4, 8, 8, 8, 8, 14, 16, 8, 8, 16, 16, 16, 16, 26, 32, 8, 8, 16, 16, 16, 16, 28, 32, 16, 16, 32, 32, 32, 32, 49, 64, 4, 4, 8, 8, 8, 8, 14, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Essentially the first differences of A220496.

First differs from A194443 (and from A220523) at a(12).

LINKS

Table of n, a(n) for n=0..72.

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

Index entries for sequences related to toothpick sequences

EXAMPLE

Written as an irregular triangle begins:

0;

1;

2;

4,4;

4,4,7,8;

4,4,8,8,8,8,13,16;

4,4,8,8,8,8,14,16,8,8,16,16,16,16,25,32;

4,4,8,8,8,8,14,16,8,8,16,16,16,16,26,32,8,8,16,16,16,16,28,32,16,16,32,32,32,32,49,64;

CROSSREFS

Cf. A139250, A139251, A194271, A194443, A194700, A194701, A220495, A220496, A220523.

Sequence in context: A035645 A063440 A008497 * A194443 A220523 A220527

Adjacent sequences:  A220494 A220495 A220496 * A220498 A220499 A220500

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Dec 23 2012

STATUS

approved

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Last modified June 18 17:05 EDT 2019. Contains 324214 sequences. (Running on oeis4.)