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A260247
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Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001001
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1
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10110, 18837, 56634, 85491, 238852, 906498, 1606456, 3601412, 12214696, 29652462, 59024564, 170234202, 476307636, 1016593000, 2509402408, 7209266008, 17002833240, 39321041096, 107511503760, 273221762146, 633085054356
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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..0..0..0..0..0..0..1....1..0..0..1..0..0..1..0..1
..0..0..0..1..0..0..0..0..0....0..1..0..0..1..0..0..1..0
..1..0..0..0..1..0..0..1..0....0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..1....1..0..0..0..0..0..0..0..0
..0..1..0..0..0..0..0..0..0....0..1..0..0..1..0..0..1..0
..0..0..1..0..0..1..0..1..0....0..0..0..1..0..0..0..0..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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