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A183255
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Number of n X n binary arrays with the number of 0-1 adjacencies equal to the number of 0-0 adjacencies
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0
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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 3X3
..0..0..0....0..0..0....1..0..1....1..1..1....1..1..1....0..0..1....0..0..0
..0..1..0....0..1..1....0..0..0....1..1..1....0..0..1....0..0..0....0..1..0
..1..0..0....0..1..1....0..0..1....1..1..1....0..0..1....1..1..1....1..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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