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A235739
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Number of (n+1)X(3+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
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1
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3992, 160075, 6175786, 216691834, 7433913626, 244518790287, 7937748092921, 252930693591705, 8002365469207168, 251138131980679659, 7853962193148167112, 244782571628904782878, 7617125737044828266921, 236703159566273463901195
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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..2..2..2....1..2..1..2....0..2..2..1....0..1..1..1....0..2..1..2
..0..1..2..2....0..1..1..2....0..0..0..1....2..0..2..0....0..2..0..1
..2..0..2..2....1..2..1..1....2..0..2..2....2..0..0..0....0..2..1..2
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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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