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A221300
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Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2
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1
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41, 7305, 1388449, 270434991, 53074198285, 10441043545431, 2055191230733819, 404558715308586615, 79631428749088948978, 15673309615820170766551, 3084736188812654258436809, 607104281948887764280719305
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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..2..1..0....0..1..0..2..1....0..1..1..2..0....0..2..1..2..0
..0..0..1..1..2....0..2..0..0..2....0..0..2..0..2....0..2..2..0..1
..1..2..2..1..1....2..1..1..2..1....2..2..1..2..0....2..1..0..2..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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