A209040 Number of n X n 0..3 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it.

4, 124, 47700, 225262148, 13034933066892, 9239962457023110368, 80235179157233210417254036, 8534774056580607728132307076396612, 11121202754126311568095965858257048619933492

Offset: 1

Author

R. H. Hardin Mar 04 2012

Keywords

• nonn

Comments

Diagonal of A209047

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..10