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 A334503 #16 Jun 29 2023 13:39:03 %S A334503 1,1,3,8,3,3,14,16,3,20,3,3,3,3,3,32,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, %T A334503 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, %U A334503 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3 %N A334503 Eventual period of a single cell in rule 131 cellular automaton in a cyclic universe of width n. %C A334503 _Bradley Klee_ computed a(1)-a(10). %D A334503 Bradley Klee, Posting to Math Fun Mailing List, Apr 26 2020 %H A334503 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1). %F A334503 Conjectures from _Colin Barker_, May 13 2020: (Start) %F A334503 G.f.: x*(1 + 2*x^2 + 5*x^3 - 5*x^4 + 11*x^6 + 2*x^7 - 13*x^8 + 17*x^9 - 17*x^10 + 29*x^15 - 29*x^16) / (1 - x). %F A334503 a(n) = a(n-1) for n>17. %F A334503 (End) %Y A334503 Cf. A180001, A334496, A334499-A334515. %K A334503 nonn %O A334503 1,3 %A A334503 _N. J. A. Sloane_, May 05 2020 %E A334503 More terms from _Jinyuan Wang_, May 09 2020