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A263743 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. 1
1, 2, 4, 14, 46, 282, 1394, 12658, 68834, 535262, 2657220, 17475120, 85950104, 527877048, 2718408447, 16862137915, 91926451748, 573370470804, 3205404296496, 19797261171758, 111841627799232, 680889785121642, 3871436713513634 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..45

EXAMPLE

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

CROSSREFS

Column 7 of A263744.

Sequence in context: A327034 A263741 A263742 * A062868 A054936 A006443

Adjacent sequences:  A263740 A263741 A263742 * A263744 A263745 A263746

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 25 2015

STATUS

approved

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Last modified September 26 11:10 EDT 2020. Contains 337357 sequences. (Running on oeis4.)