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A263739
Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and equal numbers of elements moved upwards and downwards
1
1, 2, 4, 14, 36, 110, 277, 823, 2292, 6862, 19518, 57932, 167852, 499181, 1464997, 4360738, 12891144, 38436616, 114235572, 341264028, 1018047671, 3046747775, 9114371288, 27322966348, 81915150788, 245937559472, 738620368466
OFFSET
1,2
COMMENTS
Column 3 of A263744
LINKS
EXAMPLE
Some solutions for n=7
..0....1....1....2....0....0....3....0....1....2....3....1....0....3....0....2
..1....0....3....0....1....3....2....3....4....1....1....3....2....2....3....4
..2....4....0....3....5....1....0....4....0....5....4....0....5....0....1....0
..4....6....2....1....4....4....5....1....2....0....0....6....6....6....5....1
..6....2....4....6....3....6....1....2....6....4....2....2....1....1....2....5
..3....5....5....5....2....2....4....6....5....3....6....5....4....5....6....3
..5....3....6....4....6....5....6....5....3....6....5....4....3....4....4....6
CROSSREFS
Sequence in context: A088028 A327459 A336108 * A333892 A135960 A216630
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 25 2015
STATUS
approved