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A254556
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Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally
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1
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47140, 128366, 380406, 1193965, 3638432, 11160591, 32790229, 92202169, 251677983, 676917833, 1814981434, 4893689293, 13297063017, 36436208384, 100511846076, 278663820410, 775259097470, 2161355734557, 6034365782435
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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=2
..0..1..0..1....0..1..0..1....0..0..1..1....0..1..1..1....0..0..1..0
..0..0..1..1....0..0..0..1....0..1..0..0....0..0..0..0....1..1..1..0
..1..1..0..0....0..1..1..0....0..1..0..1....0..0..1..0....0..0..0..0
..0..0..0..1....0..0..0..0....0..1..0..0....1..0..1..0....0..0..0..0
..0..1..0..0....0..1..1..1....1..1..0..0....1..1..1..0....0..1..1..1
..0..1..0..1....0..1..1..1....1..0..1..1....0..0..0..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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