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A263743
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Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and equal numbers of elements moved upwards and downwards.
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1
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1, 2, 4, 14, 46, 282, 1394, 12658, 68834, 535262, 2657220, 17475120, 85950104, 527877048, 2718408447, 16862137915, 91926451748, 573370470804, 3205404296496, 19797261171758, 111841627799232, 680889785121642, 3871436713513634
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OFFSET
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1,2
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LINKS
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EXAMPLE
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Some solutions for n=7
..0....2....4....4....5....4....1....5....1....2....4....6....0....4....0....5
..4....1....1....3....1....5....5....4....0....4....1....3....5....3....1....1
..1....5....6....5....4....6....2....1....2....6....0....2....6....2....2....4
..2....6....5....0....0....3....6....3....6....3....5....5....4....0....3....2
..5....3....3....2....3....1....0....6....5....1....6....0....3....1....5....6
..6....0....2....1....6....0....4....0....4....0....3....4....1....6....4....0
..3....4....0....6....2....2....3....2....3....5....2....1....2....5....6....3
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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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