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A220495 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A220494. 2
0, 1, 2, 4, 4, 4, 4, 8, 8, 4, 4, 8, 8, 8, 8, 16, 16, 4, 4, 8, 8, 8, 8, 16, 16, 8, 8, 16, 16, 16, 16, 32, 32, 4, 4, 8, 8, 8, 8, 16, 16, 8, 8, 16, 16, 16, 16, 32, 32, 8, 8, 16, 16, 16, 16, 32, 32, 16, 16, 32, 32, 32, 32, 64, 64, 4, 4, 8, 8, 8, 8, 16, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Essentially the first differences of A220494.

First differs from A194441 (and from A220521) 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

When written as an irregular triangle begins:

0;

1;

2;

4,4;

4,4,8,8;

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

4,4,8,8,8,8,16,16,8,8,16,16,16,16,32,32;

4,4,8,8,8,8,16,16,8,8,16,16,16,16,32,32,8,8,16,16,...

CROSSREFS

Cf. A139250, A139251, A194271, A194701, A194441, A220494, A220497, A220521.

Sequence in context: A220527 A183226 A235863 * A194441 A220521 A236680

Adjacent sequences:  A220492 A220493 A220494 * A220496 A220497 A220498

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Dec 23 2012

STATUS

approved

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Last modified December 12 12:30 EST 2019. Contains 329958 sequences. (Running on oeis4.)