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A207839
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Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 1 1 1 vertically
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1
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2, 16, 72, 780, 10144, 181896, 5346600, 235865752, 13718515360, 1274547293612, 182632256870400, 35910248805192512, 10519355362828229320, 4986223632232028372840, 3295839087283933350008520
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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=4
..1..0..1..1....1..0..1..0....0..1..1..1....0..1..1..1....1..0..1..0
..1..0..1..1....0..1..0..0....1..0..1..0....1..0..1..1....1..1..0..1
..0..1..0..0....1..1..1..1....1..1..0..1....0..1..0..0....0..1..1..1
..0..1..0..0....1..0..1..0....0..1..1..1....1..1..1..0....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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