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A207677
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Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically
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0
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2, 16, 72, 436, 2310, 11994, 65564, 379618, 2306234, 15546084, 105736196, 882008157, 7460256028, 79554888778, 842718226878, 10871887456045, 151150820925264, 2491064356652975, 43353562677488606, 900988265135221518
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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..1..0....1..1..0..0....0..1..1..0....0..1..0..0....1..0..0..1
..0..1..0..0....0..0..1..0....1..0..0..1....0..0..1..0....1..1..1..0
..0..0..1..0....0..1..1..0....1..1..1..1....0..1..0..0....0..1..1..1
..0..1..1..0....0..1..0..0....0..0..1..0....0..0..1..0....1..0..0..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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