| DATA
|
7, 22, 96, 453, 2302, 12052, 65326, 358429, 1989453, 11087559, 62022945, 347395505, 1948118084, 10928901807, 61334491446, 344258620897, 1932496326979, 10848464120753, 60902512055626, 341906150989889, 1919482880527468
|
| EXAMPLE
|
Some solutions for n=6
..0..0..1..1....0..0..1..1....0..0..1..1....0..0..0..0....0..1..1..0
..0..0..1..1....0..0..1..1....0..0..1..1....1..1..2..2....0..1..1..0
..0..0..1..1....2..2..2..2....1..1..1..1....1..1..2..2....0..0..0..0
..1..1..1..1....2..2..2..2....1..1..0..0....0..0..0..0....2..2..1..1
..1..1..2..2....3..3..2..2....2..2..0..0....0..0..0..0....2..2..1..1
..3..3..2..2....3..3..3..3....2..2..2..0....0..0..3..3....2..2..3..3
..3..3..3..3....3..3..3..3....2..2..2..0....3..3..3..3....3..3..3..3
|