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A259769
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Number of (n+2) X (5+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 or 00000101.
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1
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376, 564, 612, 474, 400, 798, 524, 450, 588, 644, 540, 568, 1060, 716, 692, 1108, 1092, 902, 896, 1610, 1112, 1022, 1552, 1406, 1180, 1216, 2116, 1448, 1408, 2344, 2016, 1686, 1688, 2906, 1988, 1882, 3060, 2492, 2108, 2152, 3652, 2468, 2412, 4124, 3264
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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) = 2*a(n-7) -2*a(n-21) +a(n-28) for n>34.
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EXAMPLE
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Some solutions for n=4
..0..1..0..0..0..0..0....0..0..0..0..0..0..1....0..0..0..1..0..0..0
..0..0..1..0..0..0..1....0..0..1..0..0..1..0....0..0..0..0..0..0..1
..0..0..0..0..0..1..0....0..1..0..0..0..0..0....1..0..0..0..0..0..0
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..1..0..0..0
..0..0..1..0..0..0..0....0..0..0..0..1..0..0....1..0..0..0..1..0..0
..0..0..0..1..0..1..0....1..0..0..1..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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