A263783 Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and exactly two more elements moved upwards than downwards

0, 0, 0, 1, 5, 37, 116, 572, 2042, 9298, 35064, 149613, 562785, 2272083, 8551255, 33698121, 127422730, 495208463, 1874278884, 7209869659, 27281399998, 104270642849, 394494583551, 1501695837844, 5679621795233, 21560364546542

Offset

1,5

Comments

Column 4 of A263787

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=7
..4....4....0....4....0....3....3....4....3....0....0....0....3....3....3....3
..0....0....2....0....4....0....1....0....5....3....5....3....0....0....1....0
..5....1....6....5....6....2....6....1....1....6....6....6....1....5....0....1
..1....5....1....1....2....6....0....3....0....1....2....2....6....2....2....5
..2....3....3....3....3....1....2....2....2....2....1....1....2....1....6....2
..3....2....4....2....1....4....4....6....4....4....4....4....5....4....4....4
..6....6....5....6....5....5....5....5....6....5....3....5....4....6....5....6

Crossrefs

Cf. A263787

Sequence in context: A358035 A319485 A201119 * A023289 A347321 A006468

Adjacent sequences: A263780 A263781 A263782 * A263784 A263785 A263786

Keyword

nonn

Author

R. H. Hardin, Oct 26 2015

Status

approved