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A065711
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The Alon-Tarsi constants AT(n).
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3
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OFFSET
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2,3
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COMMENTS
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The extended Alon-Tarsi conjecture states AT(n)<>0 for every positive integer n. Several cases have been proved - see references.
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LINKS
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FORMULA
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AT(n)=(fdels(n)-fdols(n))/(n-1)!, where fdels(n) and fdols(n) are the numbers of fixed diagonal even and fixed diagonal odd Latin squares, respectively.
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CROSSREFS
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KEYWORD
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hard,sign,more
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AUTHOR
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Jan Siwanowicz (jansiwanowicz(AT)yahoo.com), Dec 04 2001
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EXTENSIONS
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STATUS
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approved
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