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A251105
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Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements
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0
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37, 810, 19131, 667626, 39326009, 3656310083, 543468953142, 122617016954321, 44433300409434889, 25181325286832387856, 22702415402871389597941, 31991916656589876360409366, 71117605661273126240891959493
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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=3
..1..0..0..2....2..2..0..2....1..1..2..2....0..0..1..2....1..1..0..0
..1..0..0..0....0..2..0..0....0..1..0..0....0..0..0..2....0..1..1..0
..1..0..0..0....0..2..0..0....0..1..1..1....2..2..0..0....0..0..1..1
..2..2..2..2....0..2..1..0....2..0..0..1....0..2..1..1....1..0..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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