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A067214
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Number of n X n 0..6 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
..4..0..6....5..4..4....1..2..4....5..5..2....5..0..4....6..3..0....2..6..2
..3..5..2....6..4..3....0..5..2....1..5..6....0..6..3....0..6..3....3..4..3
..3..5..2....2..5..6....6..0..1....6..2..4....4..3..2....3..0..6....5..0..5
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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