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A207773
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Number of nX7 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 0 vertically
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1
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42, 1764, 8928, 43260, 240346, 1246206, 6513576, 35632160, 198768426, 1120451746, 6383202712, 36626389034, 211006949114, 1219147066568, 7059475772964, 40937679494772, 237631015514224, 1380398824589554, 8023019135887764
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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..1..0..0..1....1..0..0..1..1..0..1....0..0..1..1..0..1..1
..1..1..0..1..1..0..0....1..1..0..0..1..0..0....0..1..0..1..0..1..1
..1..1..0..0..1..0..0....1..1..0..1..0..0..1....0..1..1..0..0..1..1
..1..0..0..1..1..0..0....0..1..0..1..1..0..1....0..0..1..0..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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