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A265457
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Number of nX7 0..n+7-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
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1
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9358, 5710302, 4148236142, 3073046007824, 2268041942592142, 1653688201339124766, 1191337567990711362900, 848423104474986244064166, 598271406157938091938371830, 418189967455232632823299204488
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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..2..3..1..2..3..1....3..5..3..4..3..2..4....3..4..2..4..2..1..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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