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A172795
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Number of 7*n X n 0..3 arrays with row sums 3 and column sums 21.
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1
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1, 25288120, 8590448906009178865, 2089345627982707177699421140008960, 77513216887442246128882408582036570535556173496000, 168135704190434138519823546360671865844450109820045620452225487496000
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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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