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A255737 Total number of toothpicks in the toothpick structure of A153000 that are parallel to the initial toothpick, after n odd rounds. 3
0, 1, 2, 5, 6, 9, 13, 21, 22, 25, 29, 37, 41, 50, 65, 85, 86, 89, 93, 101, 105, 114, 129, 149, 153, 162, 177, 198, 213, 241, 293, 341, 342, 345, 349, 357, 361, 370, 385, 405, 409, 418, 433, 454, 469, 497, 549, 597, 601, 610, 625, 646, 661, 689, 741, 790, 805, 833, 885, 941, 994, 1085, 1253, 1365, 1366, 1369 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Total number of toothpicks in the first quadrant of the toothpick structure of A139250 that are parallel to the initial toothpick, after n odd rounds.

Written as an irregular triangle in which the row lengths are the terms of A011782 the right border gives A002450.

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 cellular automata

FORMULA

a(n) = (A162795(n+1) - 1)/4.

CROSSREFS

Cf. A002450, A011782, A139250, A151920, A153000, A162795, A255747.

Sequence in context: A103982 A030488 A190678 * A271371 A193978 A224486

Adjacent sequences:  A255734 A255735 A255736 * A255738 A255739 A255740

KEYWORD

nonn

AUTHOR

Omar E. Pol, Mar 07 2015

STATUS

approved

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Last modified March 1 02:21 EST 2021. Contains 341732 sequences. (Running on oeis4.)