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A221136
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Number of nX5 arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2
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1
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8, 1681, 200072, 31203396, 4235650596, 619901126244, 86907967843320, 12474883501876324, 1766575491615801750, 252036106134604983844, 35804312825751223799132, 5098360123415675049888964
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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..2..1..2..1....0..1..2..1..2....0..1..2..2..0....0..0..1..2..2
..1..2..0..1..2....0..0..2..1..2....1..0..1..1..0....2..0..1..2..1
..0..1..1..0..1....2..2..0..0..0....2..1..2..2..0....2..1..0..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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