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A172621
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Number of n X n 0..2 arrays with row sums 11 and column sums 11
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1
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0, 0, 0, 0, 0, 720, 3758757240, 57952896096182976, 2018328183128437950016800, 162526525004284727135887319788800, 29785621316391113552729016416250323294253
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OFFSET
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1,6
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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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