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A208113
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Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically
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1
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2, 16, 90, 625, 7315, 130321, 1432600, 17850625, 339961440, 8208541201, 137250396283, 2528484794641, 64191779662920, 1915940360359936, 43397063924977512, 1065586805357114881, 33367357471586657167
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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..0..0....0..1..1..1....0..1..1..1....1..1..0..1....0..1..1..0
..1..1..1..0....0..1..1..1....1..0..0..1....1..0..1..1....1..0..1..1
..1..1..0..0....0..1..1..1....0..1..1..1....1..0..0..1....0..1..1..0
..1..1..0..0....0..1..1..1....1..0..0..1....0..0..1..1....1..0..1..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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