This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A265703 #14 Feb 16 2025 08:33:27 %S A265703 0,1,3,3,6,4,9,5,12,7,12,11,14,12,19,13,22,15,19,20,24,21,23,23,28,26, %T A265703 27,26,33,30,34,31,39,26,39,29,46,32,44,38,45,47,41,45,49,38,55,42,51, %U A265703 44,53,43,59,52,60,49,65,57,60,56,69,61,70,59,78,64,56 %N A265703 Number of OFF (white) cells in the n-th iteration of the "Rule 135" elementary cellular automaton starting with a single ON (black) cell. %C A265703 This appears to be (apart from the initial zero and an index shift) the same as A070952. - _R. J. Mathar_, Dec 16 2015 %C A265703 Presumably that will not be difficult to prove. - _N. J. A. Sloane_, Jan 09 2016 %D A265703 S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55. %H A265703 Robert Price, <a href="/A265703/b265703.txt">Table of n, a(n) for n = 0..999</a> %H A265703 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ElementaryCellularAutomaton.html">Elementary Cellular Automaton</a> %H A265703 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %H A265703 <a href="https://oeis.org/wiki/Index_to_Elementary_Cellular_Automata">Index to Elementary Cellular Automata</a> %Y A265703 Cf. A070952, A265695. %K A265703 nonn,easy %O A265703 0,3 %A A265703 _Robert Price_, Dec 13 2015