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A207515
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Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically
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1
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2, 16, 98, 1307, 29622, 1048423, 54373655, 4964342828, 715483286848, 161734351034666, 59741686819322041, 35917251659399987384, 34508253720326500890077, 53717705561862882229716065
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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..0....1..1..0..1....0..0..0..0....0..1..1..0....0..1..1..0
..1..1..0..1....1..1..0..1....1..1..1..0....1..1..0..0....0..1..1..1
..0..1..1..1....0..1..1..0....1..1..1..0....1..0..0..0....1..0..1..1
..0..1..1..0....0..1..1..0....1..1..0..1....0..0..0..0....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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