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A237027
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Number of (n+1)X(n+1) 0..2 arrays with the maximum of every 2X2 subblock equal
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1
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81, 11205, 11703666, 93104881597, 5114994760537075, 2003793957976560041092, 5504724844486277965571351281, 106840883990714984887612928008269765, 14602647558550285686030851250177063594638018
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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=2
..0..1..1....1..2..0....0..1..2....2..2..0....2..1..0....0..1..0....2..2..0
..1..0..0....1..2..1....0..2..1....2..1..2....1..2..2....2..2..0....2..1..1
..1..0..1....2..1..0....1..0..0....1..0..2....0..1..1....1..2..2....2..1..2
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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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