A239160 Number of (7+1)X(n+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order.

1639, 166531, 63961519, 18120156500, 5469574400477, 1628795409782566, 486439997897622259, 145186363056322713567, 43339017958528994310740, 12936602480737955657135546, 3861570524893536530703944116

Offset: 1

Author

R. H. Hardin, Mar 11 2014

Keywords

• nonn

Comments

Row 7 of A239155

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..42