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A067215
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Number of n X n 0..7 matrices with all row and column sums equal.
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2
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OFFSET
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0,2
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LINKS
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EXAMPLE
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Some solutions for n=3
..5..6..2....6..7..4....6..0..4....5..2..1....3..2..5....2..1..5....4..7..5
..3..4..6....6..4..7....0..4..6....3..4..1....4..1..5....5..2..1....7..2..7
..5..3..5....5..6..6....4..6..0....0..2..6....3..7..0....1..5..2....5..7..4
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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