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A263585
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Number of (n+1)X(4+1) arrays of permutations of 0..n*5+4 filled by rows with each element moved a city block distance of 1 or 2, and rows and columns in increasing lexicographic order.
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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=2
..2..3..4..7.14....1..2..3..4.14....5..6..8.13.14....5..6.12.13.14
.10..0..5..6.13....7..0..5.13..8...10..0..1..3..4...10..0..8..9..3
.11..1..8.12..9...11.10..6..9.12...11..7..2..9.12...11..1..2..7..4
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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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