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A263818
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Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,0 0,1 0,2 or 1,0
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1
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32, 948, 18776, 333429, 6425985, 124854432, 2392853088, 45898515536, 882504683737, 16961728977667, 325906704633704, 6262921821080860, 120359817883976272, 2313001901843303293, 44449848853940930817
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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=3
..2..3..0..1....0..1..2..7....1..3..6..7....1..3..6..2....2..0..1..3
..6..7..5.11....4..5.10..3....0..5..2.11....0..9..7..5....4..6..7..5
..4..9..8.10....8.11..6..9....4.10..8..9....4.11..8.10....8.10..9.11
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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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