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A172796
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Number of 7*n X 3*n 0..3 arrays with row sums 3 and column sums 7
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1
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248137, 276686670102097569600, 12577849178653907149465594061673565824000, 633070426668791623743477133016092146118990897169495988019200000, 6041723108140506139185920296627256100375775025140875595591377857737131840561930240000000
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OFFSET
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1,1
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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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