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A141226
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Numbers n such that the central point of the square n x n lattice sees the maximal number of points.
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4
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1, 3, 11, 23, 27, 35, 39, 47, 59, 95, 147, 167, 179, 207, 219, 227, 279, 347, 363, 399, 543, 567, 587, 627, 767, 779, 935
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OFFSET
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1,2
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COMMENTS
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These n are the numbers for which A141225(n) is odd. Note that n must be odd. When A141225(n)=1, the central point is the only point seeing the maximal number of points. Except for 1, these numbers are 3 or 11 (mod 12).
These numbers also seem to produce cubic n x n x n lattices in which the central point has maximal visibility; see A141228. Note that for n>3, n-1 is twice a prime in A141246.
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LINKS
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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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