A239540 Number of (6+1)X(n+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.

128, 1584, 98304, 3785280, 165336096, 6976042240, 297124637920, 12622717987696, 536625406147360, 22809020631128424, 969537615294392640, 41211319597204417184, 1751741668044306860648, 74460018786142833463792

Offset: 1

Author

R. H. Hardin, Mar 21 2014

Keywords

• nonn

Comments

Row 6 of A239537

Examples

			Some solutions for n=3
..0..1..2..1....0..1..1..0....0..1..1..2....0..1..0..2....0..1..0..2
..0..1..2..1....0..1..1..0....0..1..1..2....0..1..0..2....0..1..0..2
..0..2..2..1....1..2..2..0....2..1..1..2....2..0..0..2....1..2..1..2
..1..2..2..0....1..2..2..1....2..1..0..1....2..0..0..2....1..2..1..2
..1..2..2..0....1..2..2..1....0..2..0..1....2..0..0..1....0..2..1..0
..0..1..2..0....1..0..0..2....0..2..2..1....1..0..0..1....0..2..2..0
..0..1..2..0....1..0..0..2....0..2..2..1....1..0..0..1....0..2..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 85

Formula

Empirical recurrence of order 85 (see link above)