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%I A267445 #11 Jan 17 2016 11:07:49
%S A267445 1,0,1,0,5,3,5,0,13,11,13,7,17,11,13,0,29,27,29,23,33,27,29,15,41,35,
%T A267445 37,23,41,27,29,0,61,59,61,55,65,59,61,47,73,67,69,55,73,59,61,31,89,
%U A267445 83,85,71,89,75,77,47,97,83,85,55,89,59,61,0,125,123,125
%N A267445 Number of ON (black) cells in the n-th iteration of the "Rule 129" elementary cellular automaton starting with a single ON (black) cell.
%D A267445 S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.
%H A267445 Robert Price, <a href="/A267445/b267445.txt">Table of n, a(n) for n = 0..1000</a>
%H A267445 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ElementaryCellularAutomaton.html">Elementary Cellular Automaton</a>
%H A267445 S. Wolfram, <a href="http://wolframscience.com/">A New Kind of Science</a>
%H A267445 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>
%H A267445 <a href="https://oeis.org/wiki/Index_to_Elementary_Cellular_Automata">Index to Elementary Cellular Automata</a>
%F A267445 Conjecture: a(n) = A071050(n), n>0. - _R. J. Mathar_, Jan 17 2016
%t A267445 rule=129; 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[Total[catri[[k]]],{k,1,rows}] (* Number of Black cells in stage n *)
%Y A267445 Cf. A267417.
%K A267445 nonn,easy
%O A267445 0,5
%A A267445 _Robert Price_, Jan 15 2016

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