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A359933
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Number of regions among all distinct circles that can be constructed from an n X n square grid of points using only a compass.
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8
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OFFSET
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2,1
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COMMENTS
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A circle is constructed for every pair of the n X n points; the first point defines the circle's center while the second defines the radius. The number of distinct circles constructed from the n X n points is A359931(n).
No formula for a(n) is known.
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LINKS
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Scott R. Shannon, Image for n = 2. In this and other images the n X n grid points are shown as white dots.
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FORMULA
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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