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A253378
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Number of (4+1)X(n+1) 0..2 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw
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1
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11100, 103572, 1027387, 10639450, 105139503, 943840336, 8129400162, 61350595327, 450711542396, 2911009846178, 18478731754431, 104649394080765, 585745828803677, 2972653381744884, 14960767110980305, 69280697059183435
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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
..1..0..1....2..0..1....0..1..0....2..0..1....0..1..0....0..0..1....1..0..1
..0..0..1....1..0..2....1..1..2....0..1..1....0..1..1....0..2..1....1..0..1
..0..2..0....2..0..1....1..1..0....1..1..2....1..2..0....0..2..0....0..1..0
..0..2..0....0..1..2....1..1..2....1..2..2....0..1..1....2..1..2....0..1..1
..2..1..2....2..1..0....2..1..2....2..2..2....1..2..2....1..1..1....1..1..1
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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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