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A221528 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A220514. 4
0, 4, 8, 16, 16, 16, 32, 44, 32, 16, 32, 64, 96, 64, 80, 100, 64, 16, 32, 64, 96, 128, 144, 168, 176, 80, 96, 176, 256, 160, 176, 212, 128, 16, 32, 64, 96, 128, 144, 176, 208, 168, 192, 256, 400, 320, 336, 364, 336, 112, 96, 192, 288, 368, 416, 496 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Essentially the first differences of A220514.

First differs from A194435 at a(13).

LINKS

Table of n, a(n) for n=0..55.

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

Index entries for sequences related to toothpick sequences

FORMULA

a(n) = 4*A220525(n).

EXAMPLE

When written as an irregular triangle begins:

0;

4;

8;

16,16;

16,32,44,32;

16,32,64,96,64,80,100,64;

16,32,64,96,128,144,168,176,80,96,176,256,160,176,212,128;

16,32,64,96,128,144,176,208,168,192,256,400,320,336,364,336,112,96,192,288,368,416,496,528,216,224,400,576,352,368, 436,256;

CROSSREFS

Row lengths give 1 together with A011782.

Cf. A139251, A194435, A194701, A220501, A220521, A220523, A220525.

Sequence in context: A194433 A221565 A194435 * A312759 A312760 A312761

Adjacent sequences:  A221525 A221526 A221527 * A221529 A221530 A221531

KEYWORD

nonn,tabf

AUTHOR

Omar E. Pol, Mar 23 2013

STATUS

approved

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Last modified March 29 18:37 EDT 2020. Contains 333117 sequences. (Running on oeis4.)