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A235666
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Number of (2+1) X (n+1) 0..3 arrays with the difference between each 2 X 2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.
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1
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3038, 105752, 3405756, 98555090, 2711168860, 71121044662, 1810928557276, 44992556226908, 1098636100890368, 26463799388634494, 631069393721184736, 14932511035514783692, 351283388673654775074, 8227223033013741388748
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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
..2..3..1....0..2..0....0..3..0....3..0..0....1..0..3....3..1..0....2..3..3
..2..0..1....3..1..3....1..1..0....2..1..3....1..3..3....2..2..1....1..3..0
..1..0..3....2..3..0....2..3..1....3..3..3....1..3..0....1..0..1....3..2..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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