A263696 Number of length n arrays of permutations of 0..n-1 with each element moved by -n to n places and every three consecutive elements having its maximum within 4 of its minimum.

1, 1, 2, 6, 24, 120, 288, 456, 768, 1508, 3434, 7560, 16024, 31872, 61704, 122464, 246296, 500506, 1015010, 2041372, 4098824, 8224718, 16535378, 33298104, 67036986, 134932118, 271438490, 545959366, 1098340012, 2209778140

Offset: 0

Author

R. H. Hardin, Oct 24 2015

Keywords

• nonn

Examples

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

Crossrefs

Diagonal of A263703.

Cf. A333833.

Extensions

a(0), a(23)-a(29) from Alois P. Heinz, Apr 08 2020