login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299477 Number of toothpicks added at n-th stage to the structure of the cellular automaton of A299476. 5
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, 46, 68, 66, 68, 50, 72, 36, 10, 12, 18, 24, 28, 28, 46, 42, 52, 60, 80, 88, 92, 90, 118, 84, 74 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The "word" of this cellular automaton is abcb.

The associated sound to the animation of this cellular automaton could be [tick, tock, tack, tock], [tick, tock, tack, tock], and so on.

For more information about the "word" of a cellular automaton see A296612.

LINKS

Table of n, a(n) for n=1..49.

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

Index entries for sequences related to cellular automata

Index entries for sequences related to toothpick sequences

EXAMPLE

The structure of this irregular triangle is shown below:

   a,  b,  c,  b;

   a,  b,  c,  b;

   a,  b,  c,  b,  a,  b,  c,  b;

   a,  b,  c,  b,  a,  b,  c,  b,  a,  b,  c,  b,  a,  b,  c,  b;

...

So, written as an irregular triangle in which the row lengths are the terms of A011782 multiplied by 4, the sequence begins:

   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, 46, 68, 66, 68, 50, 72, 36;

  10, 12, 18, 24, 28, 28, 46, 42, 52, 60, 80, 88,92, 90, 118, 84, 74, ...

CROSSREFS

Cf. A139251, A160121, A296511 (word "abc"), A299476, A299479 (word "abcbc").

Sequence in context: A245186 A230865 A178699 * A319805 A055950 A294428

Adjacent sequences:  A299474 A299475 A299476 * A299478 A299479 A299480

KEYWORD

nonn,tabf,more

AUTHOR

Omar E. Pol, Feb 11 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 3 17:03 EDT 2020. Contains 333197 sequences. (Running on oeis4.)