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A208077
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Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 0 vertically.
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1
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42, 1764, 30114, 514089, 10751415, 224850025, 4412968520, 86610135616, 1738407943480, 34892708070025, 694522498347405, 13824134823318561, 276034376753148762, 5511735679904794404, 109923500301084440190
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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..0..1..1..0..1....0..1..1..0..1..0..0....0..1..0..1..1..1..1
..0..1..1..1..1..1..1....1..1..1..0..1..0..1....1..0..1..0..1..1..1
..1..0..1..0..1..1..1....1..1..1..1..0..1..1....1..1..1..0..1..0..0
..1..1..1..1..0..1..0....0..1..1..1..0..1..0....1..1..0..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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