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A172914
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Number of 3*n X n 0..6 arrays with row sums 6 and column sums 18
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1
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1, 9331, 69327885583, 69404300198350892236, 3373513537183933018216388397350, 4081159676302022080974044453167358453805921, 76587973156243192496223417009664279130517333252040973460
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OFFSET
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1,2
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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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