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 A265321 #9 Feb 16 2025 08:33:27
%S A265321 1,3,6,9,14,17,22,28,36,41,47,55,63,71,82,93,106,115,126,137,150,164,
%T A265321 180,194,208,221,234,251,273,293,309,326,350,369,383,402,427,445,465,
%U A265321 490,514,533,557,588,615,641,665,687,719,750,778,802,831,865,895,926
%N A265321 Total number of ON (black) cells after n iterations of the "Rule 110" elementary cellular automaton starting with a single ON (black) cell.
%D A265321 S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.
%H A265321 Robert Price, <a href="/A265321/b265321.txt">Table of n, a(n) for n = 0..999</a>
%H A265321 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ElementaryCellularAutomaton.html">Elementary Cellular Automaton</a>
%H A265321 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>
%H A265321 <a href="https://oeis.org/wiki/Index_to_Elementary_Cellular_Automata">Index to Elementary Cellular Automata</a>
%t A265321 rule = 110; rows = 30; Table[Total[Take[Table[Total[Table[Take[CellularAutomaton[rule,{{1},0},rows-1,{All,All}][[k]],{rows-k+1,rows+k-1}],{k,1,rows}][[k]]],{k,1,rows}],k]],{k,1,rows}]
%Y A265321 Cf. A075437.
%K A265321 nonn,easy
%O A265321 0,2
%A A265321 _Robert Price_, Dec 06 2015