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A183552
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Number of nX7 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors
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1
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63, 25785, 3721925, 569461759, 87176303417, 13344696858771, 2043774880960645, 313000943874975793, 47935484320796681363, 7341240634658342843595, 1124298676282804824274345, 172184481387904369618417369
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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 3X7
..0..0..1..1..1..1..2....0..0..2..2..2..2..1....0..0..1..0..0..0..2
..0..0..1..0..2..2..2....0..0..0..2..2..1..1....0..0..1..1..1..0..2
..0..0..1..0..2..2..2....0..0..2..2..2..2..2....0..0..0..0..1..0..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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