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A121603
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Numbers n such that the radius of the smallest circle into which n unit circles can be packed is 1 + csc(Pi/k), where k >= 2 is an integer.
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1
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OFFSET
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1,1
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COMMENTS
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Corresponding k values are in A121604. For these n, the centers of k unit circles can form a regular k-gon with sides of length 2 centered at the center of the larger circle. From the diagrams in the link it appears likely that 13,18,19 are the next three terms.
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LINKS
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EXAMPLE
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See A121602 for the case n=11 involving a 9-gon.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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