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A037186
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Number of ways of placing 2n points on n X n grid so no 3 are in a line (solutions with symmetry about one main diagonal).
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1
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0, 0, 0, 0, 2, 0, 1, 5, 3, 3, 6, 3, 9, 5, 13, 14, 12, 14, 16, 17, 13, 18, 34, 43, 55
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OFFSET
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1,5
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LINKS
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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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