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A207911
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Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically
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1
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18, 324, 1278, 5041, 39831, 314721, 1726758, 9474084, 62431074, 411400089, 2464567047, 14764437081, 92881236582, 584304302404, 3583711091042, 21979959981841, 136591044276099, 848823810045561, 5238992009252400
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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....0..1..1..1....1..0..0..1....1..0..1..1....1..1..0..0
..0..0..1..1....1..1..1..0....0..1..1..0....1..1..0..1....0..1..1..1
..1..1..0..0....0..0..1..1....1..0..0..1....0..0..1..1....1..1..0..0
..0..0..1..1....0..1..1..0....0..1..1..0....1..0..0..1....0..1..1..1
..1..1..0..0....1..0..1..1....1..0..0..1....0..1..1..0....1..1..0..0
..0..0..1..1....0..1..1..0....0..1..1..0....1..0..0..1....0..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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