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A183842
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Number of (n+1)X7 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others
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1
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2050, 41430, 831331, 17250758, 355075734, 7377050305, 152705583143, 3170254841114, 65722388742561, 1363817555468924, 28285832753097447, 586851829424809393, 12173180857492937881, 252540758735572948701
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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 3X7
..0..0..0..1..0..0..1....0..1..0..1..1..1..0....0..0..0..1..1..0..0
..0..0..0..1..1..1..1....1..1..0..1..0..1..0....1..1..1..0..0..1..1
..0..0..0..1..0..1..0....0..1..0..1..1..0..1....1..0..1..0..0..1..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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