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A263740
Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and equal numbers of elements moved upwards and downwards
1
1, 2, 4, 14, 46, 214, 664, 2516, 7989, 30299, 104622, 399316, 1411880, 5298114, 18971986, 70774024, 256952680, 957861715, 3507882839, 13059944402, 48088198908, 178984147550, 661805950128, 2464463156096, 9141021963396
OFFSET
1,2
COMMENTS
Column 4 of A263744
LINKS
EXAMPLE
Some solutions for n=7
..3....1....4....0....0....4....1....4....4....1....0....1....2....4....0....1
..1....5....2....1....2....1....5....2....2....0....1....0....1....5....5....4
..0....2....0....2....5....0....0....1....5....2....5....5....6....3....4....0
..2....0....5....5....3....6....3....3....0....3....3....4....5....1....1....2
..5....4....3....3....1....5....6....0....1....6....6....3....0....0....3....6
..6....3....1....6....4....2....4....5....3....5....4....2....3....2....6....5
..4....6....6....4....6....3....2....6....6....4....2....6....4....6....2....3
CROSSREFS
Sequence in context: A255502 A149851 A149852 * A005437 A214267 A266695
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 25 2015
STATUS
approved