A202631 Number of n X n 0..3 arrays with adjacent row and column sums unequal.

4, 184, 143028, 1960824272, 443471777729100

Offset: 1

Author

R. H. Hardin Dec 21 2011

Keywords

• nonn

Comments

Diagonal of A202636

Examples

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