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Total number of OFF (white) cells after n iterations of the "Rule 73" elementary cellular automaton starting with a single ON (black) cell.
1

%I #7 Dec 05 2015 16:35:24

%S 0,3,5,12,14,23,31,44,52,65,81,94,106,127,145,166,184,209,227,256,274,

%T 307,335,362,392,427,455,492,530,569,605,654,682,729,771,816,854,909,

%U 949,998,1038,1097,1149,1200,1250,1315,1363,1422,1482,1543,1603,1670

%N Total number of OFF (white) cells after n iterations of the "Rule 73" 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="/A265220/b265220.txt">Table of n, a(n) for n = 0..999</a>

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

%Y Cf. A245549, A262448, A265122, A265156, A265205, A265206, A265219.

%K nonn,easy

%O 0,2

%A _Robert Price_, Dec 05 2015