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A260543
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Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010001
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1
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2732, 4296, 11370, 22212, 40916, 105058, 219852, 434066, 1050126, 2356780, 4693462, 10782734, 24926220, 51270870, 112254332, 260975658, 556547696, 1188249860, 2722931988, 5983413184, 12716775116, 28508190056, 63712199118
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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=4
..0..1..1..0..0..0..0..0..1....0..0..0..0..1..0..0..1..0
..0..0..0..0..0..1..0..0..1....0..0..0..0..1..0..0..0..0
..0..0..0..0..0..1..0..0..0....1..1..0..0..0..0..0..0..0
..0..1..1..0..0..0..0..0..0....0..0..0..0..0..0..0..1..0
..0..0..0..0..0..0..0..0..1....0..0..0..1..1..0..0..1..0
..0..0..0..0..1..1..0..0..0....1..0..0..0..0..0..0..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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