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A202741
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Number of n X 7 0..1 arrays with row sums equal and column sums unequal to adjacent columns.
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0
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2, 214, 14258, 613950, 24620522, 967878370, 37121438930, 1401569558590, 52383342552410, 1938999772255314, 71224141762895090
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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=3
..1..1..1..1..0..0..0....0..0..1..0..1..1..1....1..1..0..1..0..0..0
..0..0..0..1..1..1..1....1..0..1..0..0..1..1....0..0..0..1..1..1..0
..0..1..0..1..1..0..1....1..1..0..0..1..1..0....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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