A216759 Number of horizontal, vertical, diagonal, antidiagonal or knight-move neighbor colorings of an nX4 array with new integer colors introduced in row major order.

5, 34, 2957, 1340534, 1842474893

Offset: 1

Author

R. H. Hardin Sep 15 2012

Keywords

• nonn

Comments

Column 4 of A216760

Examples

			Some solutions for n=3
..0..3..2..0....0..3..2..5....0..3..6..5....0..2..0..2....0..3..5..1
..1..4..1..6....1..4..1..6....1..4..7..4....1..3..1..3....1..4..6..2
..2..3..5..7....2..3..0..7....2..5..0..3....0..4..0..2....2..3..7..8