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A207902
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Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically
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0
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2, 16, 102, 841, 13865, 314721, 6835345, 167806116, 7410251162, 472676875225, 25730176554865, 1604226387312025, 207661113723753822, 40075955918500009225, 5496265530262722657980, 835639569395431034391481
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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
..1..1..1..0....1..0..0..1....1..1..0..0....1..1..0..1....0..1..1..1
..1..0..1..1....0..1..1..0....1..1..1..0....0..0..1..1....1..0..0..1
..0..1..1..0....1..0..0..1....1..0..0..1....1..1..0..1....0..1..1..1
..0..0..1..1....0..1..1..0....0..1..1..0....0..0..1..1....1..0..0..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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