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A206884
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Number of n X n 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically
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0
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2, 16, 240, 7878, 607043, 111550389, 47015346159, 45805591252624, 104403459975101887, 559553426119779395361, 7050914050087672286282505, 208939006267581096192535752843, 14569335412372326231761169576376298
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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..0..1..1....1..0..1..1....0..0..1..1....0..1..1..1....1..0..0..0
..1..0..0..0....1..1..1..1....0..0..1..1....0..0..1..1....0..1..1..0
..0..1..1..1....0..1..1..1....1..1..0..0....1..1..1..0....1..0..1..1
..1..0..1..1....1..1..0..0....1..1..1..1....0..1..1..1....1..1..1..1
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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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