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 A362234 #7 Apr 14 2023 07:32:31 %S A362234 32,372,1804,5772,14660,30816,58232,100080,161700,249200,368384 %N A362234 Number of regions among all distinct circles that can be constructed from a point on the origin and n equally spaced points on each of the +x,-x,+y,-y coordinates axes when each pair of points is connected by a circle and where the points lie at the ends of the circles' diameter. %C A362234 A circle is constructed for every pair of the 1 + 4n points, the two points lying at the ends of a diameter of the circle. The number of distinct circles constructed from the points is A139275(n). %C A362234 No formula for a(n) is currently known. %H A362234 Scott R. Shannon, <a href="/A362234/a362234.jpg">Image for n = 1</a>. %H A362234 Scott R. Shannon, <a href="/A362234/a362234_1.jpg">Image for n = 2</a>. %H A362234 Scott R. Shannon, <a href="/A362234/a362234_2.jpg">Image for n = 3</a>. %H A362234 Scott R. Shannon, <a href="/A362234/a362234_3.jpg">Image for n = 4</a>. %F A362234 a(n) = A362235(n) - A362233(n) + 1 by Euler's formula. %Y A362234 Cf. A362233 (vertices), A362235 (edges), A362236 (k-gons), A139275 (distinct circles), A353782, A359933. %K A362234 nonn,more %O A362234 1,1 %A A362234 _Scott R. Shannon_, Apr 13 2023