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 A265323 #16 Feb 16 2025 08:33:27
%S A265323 0,1,3,7,11,19,27,36,45,59,74,89,106,125,143,163,183,209,235,263,291,
%T A265323 320,349,382,417,455,495,533,568,607,652,698,739,787,842,894,942,999,
%U A265323 1056,1110,1167,1231,1292,1348,1410,1475,1544,1617,1682,1750,1823,1902
%N A265323 Total number of OFF (white) cells after n iterations of the "Rule 110" elementary cellular automaton starting with a single ON (black) cell.
%D A265323 S. Wolfram, A New Kind of Science, Wolfram Media, 2002; p. 55.
%H A265323 Paolo Xausa, <a href="/A265323/b265323.txt">Table of n, a(n) for n = 0..5000</a> (terms 0..999 from Robert Price)
%H A265323 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ElementaryCellularAutomaton.html">Elementary Cellular Automaton</a>
%H A265323 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a>
%H A265323 <a href="https://oeis.org/wiki/Index_to_Elementary_Cellular_Automata">Index to Elementary Cellular Automata</a>
%t A265323 A265323list[nmax_]:=Accumulate[Range[1,2nmax+1,2]-Map[Total,CellularAutomaton[110,{{1},0},nmax]]];A265323list[100] (* _Paolo Xausa_, Oct 04 2023 *)
%Y A265323 Cf. A075437.
%K A265323 nonn,easy
%O A265323 0,3
%A A265323 _Robert Price_, Dec 06 2015