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A221259
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Number of 5Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2
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1
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0, 256, 418, 1612900, 78633756, 22466712321, 2294073688498, 399487764096100, 51031822108216122, 7730096571419434884, 1061888266253693915768, 154122481474602369093121, 21681358901642544133423968
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..1..2..0....0..2..1....0..2..0....0..2..1....1..2..0....0..2..1....0..2..2
..0..2..2....0..2..1....1..2..0....1..2..1....1..2..1....0..2..0....0..2..1
..0..2..1....1..2..0....1..2..2....0..2..0....0..2..0....1..2..1....0..2..0
..0..2..0....0..2..0....0..2..0....0..2..1....0..2..1....1..2..1....0..2..2
..1..2..0....2..2..0....0..2..1....0..2..1....1..2..0....0..2..0....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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