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A257204
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Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally and vertically
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1
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7579, 20815, 49932, 146246, 263630, 411303, 729311, 1137502, 1610329, 2274915, 3169472, 4338292, 5813318, 7747950, 10182266, 13271860, 17219400, 22080758, 28263063, 36156579, 45961370, 58304592, 74030044, 94195258, 120080310
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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
..0..1..0..0..0....0..1..1..0..1....0..1..0..0..1....0..1..0..0..1
..0..0..0..0..1....0..1..0..0..0....1..0..0..0..1....0..0..0..0..1
..0..0..0..0..1....0..1..0..1..1....0..0..0..0..0....0..0..0..0..0
..0..0..1..1..1....1..1..1..1..1....0..0..0..1..1....0..0..0..1..1
..1..1..1..0..0....1..0..1..0..1....1..0..0..1..0....1..0..0..1..0
..1..1..1..1..1....1..0..1..1..1....1..1..0..0..0....1..1..1..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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