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A265444
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Number of nX5 0..n+5-2 arrays with upper left zero and lower right n+5-2 and each element differing from its horizontal and vertical neighbors by one or two.
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1
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9, 455, 25069, 744805, 41855199, 4188662714, 268477963202, 11139856018641, 436718915555930, 28503014136448930, 2155806263833599027, 126581200884579064364, 5999724385865167170433, 301744936468780559629407
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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=3
..0..1..0..1..2....0..2..3..1..3....0..1..3..2..3....0..1..2..4..3
..2..3..2..3..4....2..3..1..3..4....1..3..1..3..5....1..2..4..3..4
..0..1..3..4..6....3..1..3..4..6....2..4..2..4..6....3..4..3..5..6
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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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