A206387 Number of nX6 0..6 arrays with no element equal to another within a city block distance of two, and new values 0..6 introduced in row major order.

15, 4801, 868994, 164270604, 30809397399

Offset: 1

Author

R. H. Hardin Feb 07 2012

Keywords

• nonn

Comments

Column 6 of A206389

Examples

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