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A266896 Binary representation of the middle column of the "Rule 75" elementary cellular automaton starting with a single ON (black) cell. 1

%I

%S 1,10,100,1000,10001,100011,1000110,10001100,100011001,1000110010,

%T 10001100101,100011001010,1000110010100,10001100101001,

%U 100011001010011,1000110010100110,10001100101001100,100011001010011000,1000110010100110001,10001100101001100011

%N Binary representation of the middle column of the "Rule 75" elementary cellular automaton starting with a single ON (black) cell.

%D S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.

%H Robert Price, <a href="/A266896/b266896.txt">Table of n, a(n) for n = 0..1000</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ElementaryCellularAutomaton.html">Elementary Cellular Automaton</a>

%H S. Wolfram, <a href="http://wolframscience.com/">A New Kind of Science</a>

%H <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>

%H <a href="https://oeis.org/wiki/Index_to_Elementary_Cellular_Automata">Index to Elementary Cellular Automata</a>

%t rule=75; 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 *) mc=Table[catri[[k]][[k]],{k,1,rows}]; (* Keep only middle cell from each row *) Table[FromDigits[Take[mc,k]],{k,1,rows}] (* Binary Representation of Middle Column *)

%Y Cf. A266892.

%K nonn,easy

%O 0,2

%A _Robert Price_, Jan 05 2016

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Last modified September 24 07:28 EDT 2020. Contains 337317 sequences. (Running on oeis4.)