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A170894 Similar to A160406, always staying outside the wedge, but starting with a horizontal toothpick whose endpoint touches the vertex of the wedge. 1

%I #6 Feb 24 2021 02:48:19

%S 0,1,2,4,7,10,13,19,27,33,37

%N Similar to A160406, always staying outside the wedge, but starting with a horizontal toothpick whose endpoint touches the vertex of the wedge.

%H David Applegate, Omar E. Pol and N. J. A. Sloane, <a href="/A000695/a000695_1.pdf">The Toothpick Sequence and Other Sequences from Cellular Automata</a>, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]

%H N. J. A. Sloane, <a href="/wiki/Catalog_of_Toothpick_and_CA_Sequences_in_OEIS">Catalog of Toothpick and Cellular Automata Sequences in the OEIS</a>

%K nonn,more

%O 0,3

%A _Omar E. Pol_, Jan 09 2010

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Last modified April 16 17:08 EDT 2024. Contains 371749 sequences. (Running on oeis4.)