| 数据
|
720, 3932, 20816, 125976, 716768, 4674280, 27765752, 190316292, 1159969064, 8197609072, 50708447672, 364761775656, 2275008360504, 16527758316992, 103549619966920, 756382898620552, 4750510374920744, 34803101628502320
|
| 例子
|
n=4的一些解
..2..0..2..2....2..0..2..2....2..1..3..3....2..1..2..1....0..2..3..2
..1..0..1..0....0..1..0..1....0..2..1..2....1..3..1..3....2..1..1..3
..2..0..2..0....2..0..2..2....2..1..3..3....2..1..2..1....0..2..3..2
..1..2..1..2....2..1..0..1....3..1..2..1....3..1..3..3....2..1..1..1
..1..3..3..1....0..2..2..0....2..1..3..3....2..1..2..1....1..3..2..3
|