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A262417
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Number of (n+1)X(5+1) 0..1 arrays with each row divisible by 3 and column not divisible by 3, read as a binary number with top and left being the most significant bits.
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1
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22, 709, 15310, 428301, 9401742, 220808869, 4856629870, 108673357501, 2390753728462, 52824430238229, 1162134451107630, 25594859555510701, 563086760980631182, 12391301216924710789, 272608619423065220590
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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) = 22*a(n-1) +215*a(n-2) -4730*a(n-3) -14143*a(n-4) +311146*a(n-5) +364285*a(n-6) -8014270*a(n-7) -3615956*a(n-8) +79551032*a(n-9) +9486400*a(n-10) -208700800*a(n-11)
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EXAMPLE
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Some solutions for n=3
..1..1..0..0..1..1....1..1..0..1..1..0....0..0..0..0..1..1....0..0..1..1..0..0
..1..1..1..1..1..1....0..1..1..1..1..0....1..0..0..1..0..0....1..1..1..1..1..1
..0..0..1..1..0..0....0..1..1..1..1..0....0..1..1..0..0..0....1..0..0..0..0..1
..1..1..1..1..1..1....0..0..1..0..0..1....0..0..0..0..0..0....1..0..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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