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A188875
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Number of 3Xn binary arrays without the pattern 0 0 0 antidiagonally or horizontally
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1
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8, 64, 316, 1901, 11332, 65656, 385700, 2262261, 13249261, 77665756, 455194656, 2667688716, 15634970127, 91633239536, 537041598796, 3147488927460, 18446758005813, 108112489924349, 633624215112740, 3713535944800748
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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-1) +10*a(n-2) +41*a(n-3) -3*a(n-4) -10*a(n-5) -124*a(n-6) +96*a(n-7) -50*a(n-8) +71*a(n-9) -43*a(n-10) +14*a(n-11) -5*a(n-12) +a(n-13)
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EXAMPLE
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Some solutions for 3X3
..1..1..0....1..1..1....0..1..1....1..1..1....0..1..1....0..1..1....0..0..1
..1..0..0....1..0..0....1..0..0....1..0..1....0..1..1....1..1..1....0..1..0
..1..1..0....1..1..1....1..0..1....0..0..1....1..1..0....1..1..1....1..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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