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A261105
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Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101
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1
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28, 52, 278, 1498, 13040, 127038, 2037285, 35551388, 1021480084, 32245216400, 1673092329256, 95096605137684, 8890756299113053, 911310851213791400, 153607181860224749014, 28380233483547958852746, 8623267987086739769774234
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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
..1..0..1..0..1..0....1..0..0..0..1..0....0..1..0..1..0..0....0..1..0..1..0..1
..0..1..0..1..0..0....0..1..0..1..0..1....1..0..0..0..1..0....1..0..1..0..1..0
..0..0..1..0..1..0....0..0..1..0..1..0....0..1..0..1..0..1....0..0..0..1..0..0
..0..1..0..1..0..1....0..1..0..1..0..1....1..0..1..0..1..0....1..0..1..0..1..0
..1..0..0..0..1..0....1..0..1..0..0..0....0..0..0..1..0..1....0..1..0..1..0..1
..0..1..0..1..0..0....0..1..0..1..0..1....0..0..1..0..1..0....0..0..1..0..1..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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