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 A373108 #6 May 26 2024 08:20:23 %S A373108 16,196,1608,5784,16848,37300,78420,136920,233336,363200,565700 %N A373108 Number of edges among all distinct circles that can be constructed from the 4 vertices and the equally spaced 4*n points placed on the sides of a square when every pair of the 4 + 4*n points are connected by a circle and where the points lie at the ends of the circle's diameter. %C A373108 A circle is constructed for every pair of the 4 + 4*n points, the two points lying at the ends of a diameter of the circle. %C A373108 See A373106 and A373107 for images of the circles. %F A373108 a(n) = A373106(n) + A373107(n) - 1 by Euler's formula. %Y A373108 Cf. A373106 (vertices), A373107 (regions), A373109 (k-gons), A373110 (circles), A372979, A372733, A358783, A362235, A360353. %K A373108 nonn,more %O A373108 0,1 %A A373108 _Scott R. Shannon_, May 25 2024