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A206877
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Number of n X n 0..1 arrays avoiding 0 1 0 horizontally and 1 0 1 vertically
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0
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2, 16, 230, 6478, 472412, 87541530, 37121455086, 35861331864570, 81188767942820548, 433324879893854403222, 5417399373066905672590966, 158241198424834434935170407538, 10811858970416460513671922192330804
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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..0..1....1..0..0..0....0..1..1..1....1..0..1..1....0..0..1..1
..1..1..0..0....1..1..1..1....0..0..0..0....0..0..1..1....1..1..0..1
..1..0..0..0....1..0..1..1....1..0..0..0....0..1..1..1....1..0..0..0
..1..0..0..1....1..0..1..1....0..1..1..1....0..0..0..1....0..0..0..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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