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A183449
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Number of nX8 binary arrays with every 1 having exactly two king-move neighbors equal to 1
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1
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1, 253, 1505, 7761, 176949, 1817225, 16192521, 216103851, 2491241396, 26807184942, 319246780548, 3727927654904, 42498891259325, 496063346878031, 5787799084661820, 67059980281582582, 780988033705277709
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OFFSET
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1,2
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COMMENTS
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Column 8 of A183450
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..198
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EXAMPLE
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Some solutions for 5X8
..0..1..0..0..1..1..0..0....0..1..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..1..1..0..0..1..0..0..1....0..1..1..0..0..1..1..0....0..0..1..0..0..0..1..1
..0..0..0..0..0..0..1..1....0..0..0..0..1..0..0..1....0..1..1..0..0..0..1..0
..1..0..0..0..0..0..0..0....1..1..0..0..0..1..1..0....0..0..0..0..1..0..0..0
..1..1..0..0..0..0..0..0....1..0..0..0..0..0..0..0....0..0..0..0..1..1..0..0
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CROSSREFS
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Sequence in context: A070193 A054737 A123013 * A225021 A176087 A006060
Adjacent sequences: A183446 A183447 A183448 * A183450 A183451 A183452
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Jan 04 2011
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STATUS
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approved
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