

A360352


Number of regions among all distinct circles that can be constructed from an n X n square grid of points when each pair of points is connected by a circle and the points lie at the ends of a diameter of the circle.


9




OFFSET

2,1


COMMENTS

A circle is constructed for every pair of points on the n X n grid, the points lying at the ends of a diameter of the circle. The number of distinct circles constructed from the n X n grid is A360350(n).


LINKS

Scott R. Shannon, Image for n = 2. In this and other images the n X n grid points are shown as white dots.
N. J. A. Sloane, New Gilbreath Conjectures, Sum and Erase, Dissecting Polygons, and Other New Sequences, Doron Zeilberger's Exper. Math. Seminar, Rutgers, Sep 14 2023: Video, Slides, Updates. (Mentions this sequence.)


FORMULA



CROSSREFS



KEYWORD

nonn,more


AUTHOR



STATUS

approved



