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A235428
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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 rowwise and columnwise
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1
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33610, 3874844, 439379938, 44578500538, 4199042223300, 363811777078888, 29522152843610792, 2259166952482232348, 164780478737968331028, 11536732655826361746056, 780631785944102462190274
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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..3..3..1....0..2..1..0....0..2..1..2....1..3..1..2....0..3..0..2
..2..1..0..3....0..0..0..2....2..1..3..2....2..2..2..3....2..1..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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