| 数据
|
1, 4, 14, 52, 200, 708, 2642, 10000, 37984, 144876, 554120, 2128672, 8204180, 31697564, 122734614, 476170124, 1850664202, 7204005752, 28081918548, 109604285492, 428278469018, 1675246478864, 6559126501510, 25703606447364
|
| 例子
|
n=5的一些解
..0....1...-2....0....2...-1....2....2....1....2...-1....2....1....0....2....0
.-1....0....2....1...-2....1....1....0...-1...-2....1...-1....2...-1...-1...-1
..1...-1...-1...-2....1...-1...-1...-1....0....0....0....1...-2....1....1....2
.-1...-2....0....0...-1....1...-2....1...-2...-1...-1....0...-1....2...-2...-1
..1....2....1....1....0....0....0...-2....2....1....1...-2....0...-2....0....0
|