A209046 Number of nX7 0..3 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it.

2916, 15778340, 86878417604, 478881915072688, 2640002203816927226, 14554067523333615991960, 80235179157233210417254036, 442328880747673272994524595152, 2438516891360121789946284774426192

Offset: 1

Author

R. H. Hardin Mar 04 2012

Keywords

• nonn

Comments

Column 7 of A209047

Examples

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

Links

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