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A259768
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Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101
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1
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201, 299, 385, 451, 474, 835, 872, 968, 1532, 1794, 2116, 2746, 4218, 4546, 5038, 8578, 9510, 10852, 15782, 21068, 23626, 28628, 45684, 49942, 56506, 89228, 107618, 121770, 163652, 236042, 261164, 308318, 487320, 557176, 632898, 928294, 1212250
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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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FORMULA
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Empirical: a(n) = 3*a(n-7) +5*a(n-10) +a(n-13) -a(n-14) -a(n-17) -2*a(n-21) for n>24
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EXAMPLE
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Some solutions for n=4
..1..0..0..0..0..0....0..0..0..0..0..1....0..1..0..0..1..0....1..0..0..0..0..0
..0..0..0..0..1..0....0..1..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..1..0..0..1..0..0....0..0..1..0..0..1....0..0..0..0..0..0....0..0..0..1..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..1..0..0....0..0..1..0..0..0
..1..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..1..0....0..0..0..0..0..0
..0..0..0..1..0..1....1..0..0..1..0..1....1..0..0..0..0..0....0..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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