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 A265219 #8 Feb 16 2025 08:33:27 %S A265219 0,3,2,7,2,9,8,13,8,13,16,13,12,21,18,21,18,25,18,29,18,33,28,27,30, %T A265219 35,28,37,38,39,36,49,28,47,42,45,38,55,40,49,40,59,52,51,50,65,48,59, %U A265219 60,61,60,67,56,63,80,55,74,75,60,79,78,63,86,79,74,87,88 %N A265219 Number of OFF (white) cells in the n-th iteration of the "Rule 73" elementary cellular automaton starting with a single ON (black) cell. %D A265219 S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55. %H A265219 Robert Price, <a href="/A265219/b265219.txt">Table of n, a(n) for n = 0..999</a> %H A265219 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ElementaryCellularAutomaton.html">Elementary Cellular Automaton</a> %H A265219 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %H A265219 <a href="https://oeis.org/wiki/Index_to_Elementary_Cellular_Automata">Index to Elementary Cellular Automata</a> %Y A265219 Cf. A245549, A262448, A265122, A265156, A265205, A265206. %K A265219 nonn,easy %O A265219 0,2 %A A265219 _Robert Price_, Dec 05 2015