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A188703
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Number of nX6 binary arrays without the pattern 0 0 diagonally or vertically
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1
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64, 377, 7164, 71152, 986929, 11462588, 145764780, 1769780565, 21988745988, 270110390804, 3336423566677, 41102425332512, 506994024857925, 6249982640820369, 77068431918058476, 950205205067610609
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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) = a(n-1) +119*a(n-2) +397*a(n-3) -1395*a(n-4) -5213*a(n-5) +8797*a(n-6) +24443*a(n-7) -36756*a(n-8) -45888*a(n-9) +84092*a(n-10) +19388*a(n-11) -83412*a(n-12) +24912*a(n-13) +22741*a(n-14) -12257*a(n-15) -1459*a(n-16) +1607*a(n-17) -49*a(n-18) -71*a(n-19) +3*a(n-20) +a(n-21)
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EXAMPLE
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Some solutions for 3X6
..1..1..1..1..0..1....0..1..0..1..0..1....0..0..0..1..1..0....0..0..1..0..1..1
..0..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..1..1
..1..1..1..1..1..0....0..1..0..1..0..0....1..1..1..1..0..1....0..1..0..0..1..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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