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A207687
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Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically
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1
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25, 625, 1292, 4174, 9450, 25076, 65564, 171382, 433468, 1150747, 2968284, 7722348, 19756486, 52194634, 134386810, 348854340, 903166514, 2358439491, 6101183894, 15824652924, 41067569740, 106834907856, 276798237718, 718012247867
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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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EXAMPLE
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Some solutions for n=4
..0..1..1..0....0..1..0..0....1..1..0..0....0..0..1..0....1..0..0..1
..1..0..0..1....0..1..1..0....0..1..1..1....0..1..0..0....0..1..0..0
..1..1..1..1....0..0..1..0....1..0..0..1....0..1..1..0....1..0..0..1
..0..0..1..0....0..1..0..0....1..1..1..0....0..0..1..0....0..1..0..0
..1..1..0..0....0..0..1..0....0..0..1..0....0..1..0..0....1..0..0..1
..0..0..1..0....0..1..1..0....1..1..0..0....0..1..1..0....0..1..0..0
..0..0..1..0....0..1..0..0....0..1..0..0....0..0..1..0....1..1..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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