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A172627
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Number of n X n 0..2 arrays with row sums 6 and column sums 6
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1
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0, 0, 1, 282, 628080, 3680774301, 49846153939785, 1418365816378741440, 78459796857685317493440, 7915651642356094020231766800, 1381222121393845839281152868103600
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OFFSET
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1,4
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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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