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A185842
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Number of (n+1)X7 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace
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1
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72225, 28276065, 6182861913, 1532963751183, 373447226493477, 91469611366917651, 22396183799936101173, 5482800643934316189987, 1342328585051474225431335, 328632114274707226816589733
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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..2..0..2..2..1..0....0..0..0..0..1..2..2....0..0..0..0..2..1..2
..0..0..0..2..1..1..0....0..0..0..1..1..1..0....0..0..0..2..2..2..1
..0..0..1..1..1..0..0....0..0..0..2..1..1..1....0..0..2..2..2..2..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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