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A061530
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Number of complete "rational" games of n X n tic-tac-toe: for n > 2 these are games that are a theoretical draw after each move.
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4
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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hard,nonn
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AUTHOR
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Jim Ferry (jferry(AT)alum.mit.edu), May 04 2001
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STATUS
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approved
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