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A251309
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Number of (n+1)X(n+1) 0..1 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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1
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10, 79, 890, 16006, 451826, 20080487, 1401489913, 153420339471, 26520184876394, 7212082506701341, 3095565630909130451, 2090970229906057682594, 2228353475131985328672710, 3744199174821109524081657694
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OFFSET
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1,1
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COMMENTS
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Diagonal of A251317
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..19
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EXAMPLE
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Some solutions for n=4
..1..1..0..0..1....1..1..0..0..0....1..1..0..0..0....1..0..0..0..1
..0..1..0..0..0....0..1..1..1..0....0..1..1..0..0....1..1..1..0..1
..0..1..0..0..0....0..0..0..1..0....1..0..1..1..0....0..0..1..1..0
..0..1..1..1..1....0..0..0..1..1....1..0..0..1..0....0..0..0..1..1
..1..0..0..0..1....1..0..0..0..0....1..0..0..1..0....1..1..0..0..1
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CROSSREFS
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Sequence in context: A006329 A077245 A036732 * A206764 A253649 A244729
Adjacent sequences: A251306 A251307 A251308 * A251310 A251311 A251312
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Dec 01 2014
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STATUS
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approved
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