

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.


4



32, 372, 1804, 5772, 14660, 30816, 58232, 100080, 161700, 249200, 368384
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OFFSET

1,1


COMMENTS

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).
No formula for a(n) is currently known.


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FORMULA



CROSSREFS



KEYWORD

nonn,more


AUTHOR



STATUS

approved



