A203496 Number of 6Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns.

3, 676, 171068, 56438584, 20726134056, 8496020082856

Offset: 1

Author

R. H. Hardin Jan 02 2012

Keywords

• nonn

Comments

Row 6 of A203491

Examples

			Some solutions for n=5
..2..1..2..2..0....1..0..0..1..2....0..1..0..2..0....2..1..0..2..1
..0..1..2..2..2....1..0..1..0..2....1..2..0..0..0....2..2..1..1..0
..2..1..1..1..2....2..2..0..0..0....1..1..0..0..1....1..1..0..2..2
..1..1..1..2..2....1..0..2..1..0....2..1..0..0..0....2..0..0..2..2
..1..2..1..2..1....1..2..0..0..1....0..2..1..0..0....1..2..2..0..1
..1..2..2..2..0....1..1..0..2..0....2..0..0..1..0....1..1..2..0..2