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A183781
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Half the number of (n+1)X9 binary arrays with no 2X2 subblock having exactly 2 ones
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1
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3653, 83799, 1604473, 34228999, 701022093, 14750484447, 307446383061, 6453534773135, 135163113130301, 2836308059464159, 59486265398855701, 1248295058919868871, 26191521416003319909, 549635175272088975695
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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 with a(1,1)=0 for 3X9
..0..1..1..1..1..1..1..1..1....0..0..1..1..1..1..1..1..0
..1..1..1..1..1..1..0..1..0....0..0..0..1..1..1..1..1..1
..1..1..0..1..1..1..1..1..1....1..0..0..0..1..1..0..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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