| 数据
|
18, 324, 1350, 3726, 8280, 16038, 28224, 46260, 71766, 106560, 152658, 212274, 287820, 381906, 497340, 637128, 804474, 1002780, 1235646, 1506870, 1820448, 2180574, 2591640, 3058236, 3585150, 4177368, 4840074, 5578650, 6398676, 7305930
|
| 例子
|
n=4的一些解
..1..1..1..1..1..1....1..0..1..0..0..1....0..1..0..1..0..0....0..1..0..1..0..0
..0..0..1..0..1..0....0..1..0..0..1..0....0..1..0..0..1..0....0..1..0..1..0..0
..0..0..1..0..1..0....0..1..0..0..1..0....0..1..0..0..1..0....0..1..0..1..0..0
..0..0..1..0..1..0....0..1..0..0..1..0....0..1..0..0..1..0....0..1..0..1..0..0
|