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A208500
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Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically
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1
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42, 1764, 1728, 5436, 13806, 37430, 111328, 286754, 844200, 2336928, 6407688, 18684540, 50681028, 145645192, 408090270, 1135228896, 3261392100, 8999952300, 25648313760, 72191962584, 201563085152, 574718422958, 1602200548928
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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
..0..1..1..1..1..1..1....0..1..1..1..0..1..1....1..0..1..0..1..1..0
..1..0..1..0..1..0..1....0..1..0..1..0..1..0....0..1..1..0..1..0..1
..1..1..0..1..0..1..0....1..0..1..0..1..0..1....0..1..0..1..0..1..1
..0..1..0..1..1..1..1....1..1..1..1..1..1..1....1..0..1..1..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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