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A203893
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Number of (n+1)X6 0..4 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing
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0
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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=4
..0..0..2..3..4..4....1..3..1..3..1..1....2..1..2..3..4..1....4..2..2..3..2..2
..1..1..3..3..2..2....2..2..4..2..4..4....0..3..3..2..1..4....2..4..4..3..4..4
..4..4..0..0..2..2....0..4..2..4..3..3....4..2..1..3..4..1....4..3..3..4..3..4
..4..4..4..4..3..3....2..2..4..4..1..2....2..4..0..0..0..3....4..3..4..3..4..2
..4..4..4..4..3..3....2..3..2..3..1..4....4..4..2..4..0..4....3..4..3..4..4..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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