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A207941
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Number of 5Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 1 0 vertically
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1
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10, 100, 350, 1271, 5594, 25490, 121313, 584386, 2841676, 13864995, 67793828, 331778574, 1624527917, 7956223332, 38970988538, 190898358977, 935140523244, 4580980652676, 22441074230301, 109933649821120, 538540783077848
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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) = 8*a(n-1) -5*a(n-2) -82*a(n-3) +113*a(n-4) +341*a(n-5) -502*a(n-6) -765*a(n-7) +943*a(n-8) +998*a(n-9) -797*a(n-10) -709*a(n-11) +275*a(n-12) +233*a(n-13) -26*a(n-14) -24*a(n-15) for n>16
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EXAMPLE
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Some solutions for n=4
..0..1..1..0....0..0..0..0....1..0..1..1....1..0..1..0....1..1..1..1
..1..1..0..1....1..0..1..1....1..1..0..1....0..1..1..0....1..0..1..0
..1..1..1..1....0..0..0..0....1..1..1..1....1..0..1..0....1..1..1..1
..1..1..1..1....0..0..0..0....1..1..1..1....1..1..1..0....1..0..1..1
..1..1..1..1....0..0..0..0....1..1..1..1....1..1..1..0....1..0..1..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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