A263820 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having index change (+-,+-) 0,0 0,1 0,2 or 1,0.

450, 134028, 21876416, 3019386508, 469723808009, 74221751084228, 11527528524302048, 1793121938656927984

Offset: 1

Author

R. H. Hardin, Oct 27 2015

Keywords

• nonn

Comments

Row 4 of A263816

Examples

			Some solutions for n=2
..2..4..1....0..4..2....0..2..1....0..4..2....0..2..1....2..0..1....2..0..1
..0..7..5....3..1..5....6..7..3....6..1..3....4..7..8....3..5..8....3..4..5
..3..6..8....7..8..6....8..4..5....8..7..5....3..6..5....6..4..7....7..8..6
..9.11.10....9.11.14....9.10.14...12.13.11...11..9.14...12.13.11...10.11..9
.12.13.14...12.10.13...12.13.11....9.10.14...12.10.13....9.10.14...12.14.13
		

Crossrefs

Cf. A263816