A373108 - OEIS

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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.

16, 196, 1608, 5784, 16848, 37300, 78420, 136920, 233336, 363200, 565700

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OFFSET

0,1

COMMENTS

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.

See A373106 and A373107 for images of the circles.

LINKS

Table of n, a(n) for n=0..10.

FORMULA

a(n) = A373106(n) + A373107(n) - 1 by Euler's formula.

CROSSREFS