cp's OEIS Frontend

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.

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.

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%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