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 A359931 #5 Jan 22 2023 08:58:19 %S A359931 8,38,120,277,544,969,1616,2494,3724,5331,7408,10038,13284,17181, %T A359931 21968,27653,34320,42110,51148 %N A359931 Number of distinct circles that can be constructed from an n x n square grid of points using only a compass. %C A359931 A circle is constructed for every pair of the n x n points, the first point defines the circle's center while the second the radius distance. %C A359931 No formula for a(n) is known. %C A359931 See A359932 and A359933 for images of the resulting vertices and regions. %Y A359931 Cf. A359932 (vertices), A359933 (regions), A359934 (edges), A359935 (k-gons). %K A359931 nonn,more %O A359931 2,1 %A A359931 _Scott R. Shannon_, Jan 19 2023