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 A351352 #8 Feb 19 2022 14:21:17 %S A351352 2,1,1,1,1,1,1,1,1,1,1,5,2,2,5,13,1,13,1,25,1,1,5,1,1 %N A351352 Denominator of the square of the radius of the largest circle, centered at the origin, around which a Racetrack car (using von Neumann neighborhood) can run a full lap in n steps. %C A351352 The car starts and finishes on the positive x-axis, as in A351042. %C A351352 The square of the radius of the largest circle is a rational number, because the squared distance from the origin to a line segment between two points with integer coordinates is always rational. %H A351352 Pontus von Brömssen, <a href="/A351351/a351351.svg">Some optimal Racetrack trajectories for A351351/A351352</a>. %H A351352 Wikipedia, <a href="https://en.wikipedia.org/wiki/Racetrack_(game)">Racetrack</a> %e A351352 See A351351 for examples. %Y A351352 Cf. A351042, A351350, A351351 (numerators). %K A351352 nonn,frac,more %O A351352 8,1 %A A351352 _Pontus von Brömssen_, Feb 09 2022