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A265456
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Number of nX6 0..n+6-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
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1
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1864, 502154, 161435322, 52509347006, 16879041018070, 5327856426356284, 1653688201339124766, 505814947757578021828, 152811753980421954365094, 45684812294133949143632978, 13536944058009909827807440148
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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
..2..3..2..1..3..5....4..2..3..2..1..3....1..2..0..1..3..1....4..3..4..2..4..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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