The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A267606 Binary representation of the n-th iteration of the "Rule 181" elementary cellular automaton starting with a single ON (black) cell. 1
1, 11, 1011, 111011, 10101011, 1111111011, 101111101011, 11101110111011, 1010101010101011, 111111111111111011, 10111111111111101011, 1110111111111110111011, 101010111111111010101011, 11111110111111101111111011, 1011111010111110101111101011 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
REFERENCES
S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.
LINKS
Eric Weisstein's World of Mathematics, Elementary Cellular Automaton
MATHEMATICA
rule=181; rows=20; ca=CellularAutomaton[rule, {{1}, 0}, rows-1, {All, All}]; (* Start with single black cell *) catri=Table[Take[ca[[k]], {rows-k+1, rows+k-1}], {k, 1, rows}]; (* Truncated list of each row *) Table[FromDigits[catri[[k]]], {k, 1, rows}] (* Binary Representation of Rows *)
CROSSREFS
Cf. A267605.
Sequence in context: A289886 A127961 A127962 * A303786 A015511 A065050
KEYWORD
nonn,easy
AUTHOR
Robert Price, Jan 18 2016
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 29 22:36 EDT 2024. Contains 372954 sequences. (Running on oeis4.)