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A207248
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Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically
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1
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2, 16, 102, 940, 9072, 101036, 1231650, 16436824, 237255370, 3684061372, 61152471648, 1079792961548, 20191392448058, 398344602963240, 8263930584283206, 179759826117751524, 4089350929606635216
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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..0..0....1..1..0..0....1..1..0..0....1..1..1..1....0..0..0..0
..1..1..1..0....1..0..0..0....0..0..0..0....1..1..1..1....0..0..0..0
..1..1..1..0....0..0..0..0....0..0..0..0....1..1..1..1....1..0..0..0
..1..1..1..0....0..0..0..0....1..0..0..0....1..1..1..1....1..1..0..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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