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A221385
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Number of nX5 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2
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1
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0, 38, 1450, 52320, 1829388, 63358088, 2188482014, 75538637214, 2606815065698, 89955626884315, 3104132404604618, 107115039737573319, 3696240367391216656, 127546876795624543082, 4401284212854919660438, 151875943167053941347552
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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
..0..2..0..1..0....0..2..2..1..0....0..2..1..2..1....0..1..2..1..0
..1..1..1..1..1....0..1..2..1..0....0..0..1..2..1....0..2..2..2..1
..1..2..2..2..0....1..2..1..2..0....1..2..1..1..0....0..2..1..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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