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A283099
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Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.
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1
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13, 2458, 208949, 13563911, 774403237, 40737147156, 2028744947006, 97051820977159, 4503103658479576, 203960818891878775, 9059640264132416831, 395981104806526628656, 17074768173189616798859, 727813578716606158435457
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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=2
..1..1..1..0..1..0..1. .0..0..1..1..0..0..1. .1..1..0..0..1..0..0
..0..0..1..0..1..0..1. .1..1..0..1..0..1..1. .1..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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