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 A380814 #5 Feb 05 2025 14:31:19 %S A380814 0,1,5,8,10,9,5,2,2,5,9,10,8,5,4,2,1,1,8,18,25,29,26,16,5,9,20,32,41, %T A380814 45,40,26,17,13,16,20,32,41,45,40,36,29,25,26,26,25,25,20,16,13,17,26, %U A380814 34,50,61,65,58,50,37,25,20,16,13,13,17,26,34,41,45,40 %N A380814 Squared distance to the origin after the n-th step of the Racetrack trajectory in A380812 and A380813. %H A380814 Pontus von Brömssen, <a href="/A380814/b380814.txt">Table of n, a(n) for n = 0..10000</a> %H A380814 Pontus von Brömssen, <a href="/A380812/a380812.png">Plot of the first 5000 steps of the trajectory</a>. %H A380814 Wikipedia, <a href="https://en.wikipedia.org/wiki/Racetrack_(game)">Racetrack</a>. %F A380814 a(n) = A380812(n)^2 + A380813(n)^2. %Y A380814 Cf. A380812 (x-coordinates), A380813 (y-coordinates). %K A380814 nonn %O A380814 0,3 %A A380814 _Pontus von Brömssen_, Feb 05 2025