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A208835
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Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 0 vertically
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1
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2, 16, 78, 855, 8736, 272206, 6206445, 613538688, 30091441770, 9949962265465, 995860712362464, 1146808937112275178, 223896318271083352427, 927305041435819383020944, 341298409330345173624970966
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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..1..1....0..1..0..1....1..0..1..0....0..1..1..0....1..0..1..1
..0..1..0..1....1..0..1..0....1..1..0..0....0..1..1..1....0..1..1..0
..1..1..1..1....0..1..0..1....1..0..1..0....1..1..1..0....1..0..1..1
..0..1..0..1....1..0..1..0....1..1..0..1....0..1..1..1....0..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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