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A208006
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Number of nX7 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 1 and 1 1 0 vertically
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1
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35, 1225, 4861, 16742, 106503, 486443, 3569728, 18874239, 139219755, 803098636, 5786553545, 35249727777, 248244598082, 1565658732841, 10842687856821, 69941258792526, 479065006181663, 3136670786824267, 21341996465201648
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OFFSET
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1,1
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COMMENTS
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Column 7 of A208007
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 13*a(n-1) -6*a(n-2) -485*a(n-3) +1437*a(n-4) +3392*a(n-5) -14770*a(n-6) -2894*a(n-7) +44308*a(n-8) -15290*a(n-9) -46782*a(n-10) +23648*a(n-11) +18387*a(n-12) -9503*a(n-13) -2702*a(n-14) +1151*a(n-15) +129*a(n-16) -32*a(n-17) for n>18
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EXAMPLE
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Some solutions for n=4
..0..1..1..0..1..0..1....0..1..1..1..0..1..1....0..1..0..1..1..1..1
..1..0..1..1..1..0..1....0..0..0..0..0..0..0....1..0..1..1..0..1..0
..0..1..1..0..1..1..1....0..1..0..1..1..1..1....0..1..0..1..1..1..1
..1..0..1..0..1..0..1....0..0..0..0..0..0..0....1..0..1..1..0..1..0
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CROSSREFS
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Sequence in context: A208112 A208844 A207665 * A207568 A209649 A207756
Adjacent sequences: A208003 A208004 A208005 * A208007 A208008 A208009
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Feb 22 2012
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STATUS
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approved
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