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A208163
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Number of nX7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically
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1
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28, 784, 4706, 28681, 222487, 1474641, 9072707, 57903614, 364876262, 2242331814, 13768713631, 84428280229, 514353352557, 3124595619191, 18960957925634, 114849976141130, 694688437603860, 4198845405962339, 25361823055909609
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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..1..0..0..1..1..0....0..1..1..1..1..1..1....0..1..1..1..1..1..0
..0..1..1..1..1..1..1....1..1..1..1..1..1..0....1..0..0..1..0..0..1
..0..1..1..1..0..0..1....1..1..0..0..1..1..1....1..1..0..0..1..1..1
..0..0..1..0..0..1..0....0..0..1..0..0..1..1....0..1..0..0..1..1..1
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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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