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A037009
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Consider an n X n board with a knight's path, not necessarily closed, that visits every square exactly once; number the squares [ 1..n^2 ] along the path; a(n) = maximal number of prime numbered squares that can be attacked by a queen.
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0
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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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hard,nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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