A263681 Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and with no two consecutive decreases.

1, 2, 5, 17, 70, 349, 2017, 11253, 58743, 286327, 1331630, 6077344, 27523597, 126333667, 587717372, 2760990038, 13033515692, 61583867944, 290639649211, 1368090247852, 6426462715392, 30151737816899, 141417395713905

Offset: 1

Author

R. H. Hardin, Oct 23 2015

Keywords

• nonn

Comments

Column 6 of A263683.

Examples

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

Links

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

Crossrefs

Cf. A263683.