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A235663
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Number of (n+1)X(3+1) 0..3 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
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1
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33610, 3405756, 314516602, 25779181084, 1970890033598, 141161012840294, 9652126935575732, 634521352294571412, 40476229916204622416, 2519324127973915344880, 153818507566307018434672
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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=1
..1..2..1..2....2..0..3..3....3..3..3..3....2..2..2..0....1..3..1..1
..3..2..0..3....2..0..1..0....3..3..0..2....2..0..3..0....2..3..2..3
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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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