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A206869
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Number of nX6 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically
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1
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44, 1936, 31529, 502864, 8942469, 159327093, 2805723059, 49382253588, 870161983686, 15335126811127, 270230133940648, 4761777405210821, 83908473333577949, 1478577785507810905, 26054511301483619894
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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..1..1..1..0....1..0..1..1..1..0....0..1..0..1..1..1....0..1..1..0..1..1
..0..1..0..1..1..0....0..1..1..1..0..1....0..0..1..1..0..1....0..1..0..1..1..0
..0..1..0..1..0..1....0..0..1..0..0..1....1..0..1..0..0..1....1..0..0..1..0..0
..0..0..1..1..0..0....0..0..1..0..1..0....0..1..0..0..1..0....0..0..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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