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A172541
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Number of n X n 0..1 arrays with row sums 7 and column sums 7.
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3
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0, 0, 0, 0, 0, 0, 1, 40320, 14398171200, 8302816499443200, 7722015017013984456000, 11649337108041078980732943360, 28278447454165011203551734584421120, 108738182111446498614705217754614976371200
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OFFSET
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1,8
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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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