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A172894
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Number of n X n 0..6 arrays with row sums 6 and column sums 6.
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4
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1, 1, 7, 406, 132724, 164176640, 602351808741, 5562418293759978, 114601242382721619224, 4801114002903931560293544, 379957050243738294456427057200, 53499490664883668314419655562118240
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OFFSET
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0,3
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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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