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A234866
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Number of (n+2)X(5+2) 0..3 arrays with each 3X3 subblock having the sum of its 72 absolute element differences equal to 52, and no adjacent elements equal
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0
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=1
..0..1..2..0..1..3..2....0..3..1..0..2..0..2....0..2..3..0..2..3..0
..2..3..0..3..0..1..3....2..0..3..1..0..3..0....2..3..0..1..3..0..2
..0..1..3..1..2..3..0....1..2..0..2..3..1..2....0..1..2..0..1..2..0
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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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