| 数据
|
1, 1, 4, 25, 125, 633, 2532, 10288, 48776, 233776, 1080228, 4996113, 23080949, 107157345, 501507348, 2345998289, 10947914825, 51111745065, 238823109920, 1116507049088, 5221116919456, 24414616690816, 114158428564416
|
| 示例
|
n=4的一些解
..0..7....5..7....5..1....0..4....0..1....0..4....0..1....6..4....5..1....0..4
..2..6....2..6....2..3....2..6....7..6....7..6....7..3....2..3....7..6....2..3
..4..5....4..0....4..0....1..5....4..5....1..5....4..5....1..5....4..0....1..5
..3..1....3..1....6..7....3..7....3..2....3..2....6..2....0..7....3..2....6..7
|