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A203911
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Number of (n+1)X4 0..6 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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1
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203994, 147040347, 111118765078, 63988637491851, 29334499587197078, 11182918411649538015, 3656539548388832446371, 1048301248458803859992252, 267875645578258677848266646, 61792693706402815887236884165
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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
..4..3..3..1....6..3..4..5....1..1..2..2....5..0..6..4....4..1..1..5
..3..4..4..6....3..6..5..4....3..3..6..6....0..5..2..4....0..5..5..6
..6..5..5..4....6..4..5..6....2..4..6..6....6..1..0..3....0..5..5..6
..5..6..6..4....4..6..6..5....6..1..4..4....1..6..3..5....1..4..6..5
..5..6..6..4....5..6..4..5....1..6..3..3....4..6..2..0....4..2..1..1
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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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