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A183808
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1/16 the number of (n+1)X7 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor
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1
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243, 4341, 70044, 1232595, 20745787, 360549804, 6153770375, 106324742825, 1823862776230, 31435034643715, 540242027044863, 9301932692926094, 159977961165737219, 2753396085474939071, 47367137650822979126
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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 with upper left block zero for 3X7
..0..0..1..0..0..1..0....0..0..0..1..0..0..1....0..0..1..1..1..0..0
..0..0..1..1..1..0..0....0..0..1..1..0..1..1....0..0..1..0..0..0..1
..1..0..0..0..1..1..1....1..1..0..0..0..1..1....1..1..0..0..1..1..1
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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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