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A221391
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Number of 5Xn 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, 0, 40, 15181, 1829388, 229338911, 25415184702, 2810579281184, 304942133485122, 32982395377267648, 3554547354934938568, 382579389710396900732, 41139562348362648154196, 4421834681716006875081205
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OFFSET
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1,3
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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....0..2..1....0..2..1....0..2..0....0..2..1....0..2..1....0..2..1
..0..2..0....0..2..1....1..2..1....1..2..1....0..2..1....0..2..1....1..2..1
..1..2..1....1..2..1....0..2..1....1..2..1....1..2..1....0..2..1....0..2..0
..1..2..0....0..2..0....0..2..1....0..2..1....0..2..1....0..2..1....1..2..0
..1..2..0....1..2..0....0..2..0....0..2..0....0..2..0....1..2..0....1..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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