cp's OEIS Frontend

A299477 Number of toothpicks added at n-th stage to the structure of the cellular automaton of A299476.

%I A299477 #15 Feb 04 2019 14:02:35
%S A299477 1,2,4,6,8,6,12,10,8,12,18,24,24,20,30,18,8,12,18,24,28,28,46,38,48,
%T A299477 46,68,66,68,50,72,36,10,12,18,24,28,28,46,42,52,60,80,88,92,90,118,
%U A299477 84,74
%N A299477 Number of toothpicks added at n-th stage to the structure of the cellular automaton of A299476.
%C A299477 The "word" of this cellular automaton is abcb.
%C A299477 The associated sound to the animation of this cellular automaton could be [tick, tock, tack, tock], [tick, tock, tack, tock], and so on.
%C A299477 For more information about the "word" of a cellular automaton see A296612.
%H A299477 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>
%H A299477 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>
%H A299477 <a href="/index/To#toothpick">Index entries for sequences related to toothpick sequences</a>
%e A299477 The structure of this irregular triangle is shown below:
%e A299477    a,  b,  c,  b;
%e A299477    a,  b,  c,  b;
%e A299477    a,  b,  c,  b,  a,  b,  c,  b;
%e A299477    a,  b,  c,  b,  a,  b,  c,  b,  a,  b,  c,  b,  a,  b,  c,  b;
%e A299477 ...
%e A299477 So, written as an irregular triangle in which the row lengths are the terms of A011782 multiplied by 4, the sequence begins:
%e A299477    1,  2,  4,  6;
%e A299477    8,  6, 12, 10;
%e A299477    8, 12, 18, 24, 24, 20, 30, 18;
%e A299477    8, 12, 18, 24, 28, 28, 46, 38, 48, 46, 68, 66, 68, 50, 72, 36;
%e A299477   10, 12, 18, 24, 28, 28, 46, 42, 52, 60, 80, 88,92, 90, 118, 84, 74, ...
%Y A299477 Cf. A139251, A160121, A296511 (word "abc"), A299476, A299479 (word "abcbc").
%K A299477 nonn,tabf,more
%O A299477 1,2
%A A299477 _Omar E. Pol_, Feb 11 2018