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A186138
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Number of (n+1)X7 0..2 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace
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1
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1304424, 297562572, 71683161894, 17226840778164, 4163686846399494, 1006890732907711236, 243566994040674992586, 58923376595033869477548, 14255041036793840265910500, 3448666147857395420772494514
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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..2..0....0..0..0..0..0..1..2....0..0..0..1..1..1..2
..0..0..1..0..1..0..0....0..0..2..1..2..0..2....0..0..1..0..2..0..2
..0..1..0..0..0..2..0....0..1..0..2..0..2..2....0..1..0..0..0..2..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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