A188964 Number of nX3 array permutations with each element moved and moved by a city block distance of no more than three.

2, 265, 78976, 22666641, 4064659324, 741295637637, 144279772457456, 28624027037417040, 5598968416725014336, 1090382503789570607376, 212622119350607875451536, 41520188783110631009991949

Offset: 1

Author

R. H. Hardin Apr 14 2011

Keywords

• nonn

Comments

Column 3 of A188966

Examples

			Some solutions for 4X3
..1..0..5....1..0..5....1..0..7....1..0..5....1..0..7....1..0..7....1..0..5
..4..2.10....7..9..6....8..9..4....2..9.10....4..2.11....2.10..8....9..8..7
..3..8..9...10..2..3....5..2..3...11..8..6....5..3..9....3.11..9...10..3..6
..6.11..7....8.11..4...11..6.10....3..4..7...10..8..6....6..5..4....4.11..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..17