A208433 Number of nX7 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors).

365, 13824, 15273, 169899, 2623167, 36422648, 509698666, 7308976236, 104548902187, 1491128667703, 21311956695888, 304671374144232, 4354902558505404, 62240469327888568, 889738186413603234

Offset: 1

Author

R. H. Hardin Feb 26 2012

Keywords

• nonn

Comments

Column 7 of A208434

Examples

			Some solutions for n=4
..0..1..0..1..1..1..0....0..0..0..0..1..2..0....0..1..2..0..2..0..2
..2..0..2..0..1..0..2....2..1..2..1..2..1..2....0..1..1..2..0..1..1
..0..1..0..2..0..2..0....1..2..1..2..1..2..1....2..1..2..0..2..0..2
..2..0..2..0..1..0..1....2..1..2..0..2..0..2....0..2..0..2..0..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210