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 A346994 #20 Aug 24 2021 08:58:11 %S A346994 0,1,1,1,5,25,2,5,169,65,17,169,5,25,13,29,5525,125,17,481,10,45,205, %T A346994 19721,1189,25,13,338,29725,697,29,65,17,1105,3445,18,4453,40885,4625, %U A346994 481,20,85,12505,2125,200,89,45,7921,425,89725,93925,2405,2465,10201,98345 %N A346994 Numerators of the squared radii corresponding to circular disks covering record numbers of grid points A346993 of the square lattice. %H A346994 Hugo Pfoertner, <a href="http://www.randomwalk.de/sequences/a346993.pdf">Visualization of configurations with maximum number of covered grid points</a>. %e A346994 0/1, 1/4, 1/2, 1/1, 5/4, 25/16, 2/1, 5/2, 169/50, 65/18, 17/4, 169/36, ... %e A346994 For detailed examples see A346993 and the linked pdf. %Y A346994 The corresponding denominators are A346995. %Y A346994 Cf. A346993, A123690, A346124, A346784, A346785. %Y A346994 All terms of a(n)/A346995(n) with the sole exception of 1/4 are terms of A192493/A192494. %K A346994 nonn,frac %O A346994 1,5 %A A346994 _Hugo Pfoertner_, Aug 16 2021