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A188964
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Number of nX3 array permutations with each element moved and moved by a city block distance of no more than three
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1
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2, 265, 78976, 22666641, 4064659324, 741295637637, 144279772457456, 28624027037417040, 5598968416725014336, 1090382503789570607376, 212622119350607875451536, 41520188783110631009991949
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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 4X3
..1..0..5....1..0..5....1..0..7....1..0..5....1..0..7....1..0..7....1..0..5
..4..2.10....7..9..6....8..9..4....2..9.10....4..2.11....2.10..8....9..8..7
..3..8..9...10..2..3....5..2..3...11..8..6....5..3..9....3.11..9...10..3..6
..6.11..7....8.11..4...11..6.10....3..4..7...10..8..6....6..5..4....4.11..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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