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A188989
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Number of nX6 binary arrays without the pattern 0 0 1 antidiagonally or horizontally
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1
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33, 1089, 21952, 423606, 7844188, 144733702, 2668260348, 49183191266, 906546313088, 16709359181770, 307984617365928, 5676728147678902, 104632630902956668, 1928573464163110638, 35547186061830482980
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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) -47*a(n-2) -420*a(n-3) +1353*a(n-4) +490*a(n-5) -5593*a(n-6) +15840*a(n-7) -27360*a(n-8) +19496*a(n-9) -1828*a(n-10) -1376*a(n-11) -576*a(n-12) for n>14
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EXAMPLE
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Some solutions for 3X6
..0..1..1..0..1..1....1..1..0..1..0..1....1..1..1..1..0..1....1..0..1..1..0..0
..1..1..1..1..1..0....0..1..0..1..0..0....1..1..1..0..1..0....1..0..1..1..1..1
..0..1..0..1..1..1....0..1..0..1..1..1....1..1..0..1..0..1....1..0..1..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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