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A267130 Binary representation of the n-th iteration of the "Rule 101" elementary cellular automaton starting with a single ON (black) cell. 1

%I #8 Jan 11 2016 10:28:43

%S 1,10,11110,101,101101100,1101101011,1101101111000,1101100010111,

%T 10001101010110000,101001111110101111,111110000000111100000,

%U 101111100001011111,1011101100001011011000000,11001101011011011010111111,11010001111011011011110000000

%N Binary representation of the n-th iteration of the "Rule 101" 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="/A267130/b267130.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=101; 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 *)

%Y Cf. A267129.

%K nonn,easy

%O 0,2

%A _Robert Price_, Jan 10 2016

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