| 数据
|
21, 441, 2491, 13494, 58026, 197256, 683257, 2037721, 5952936, 16732138, 44859931, 119159921, 307712676, 784050794, 1976285122, 4919758858, 12172588913, 29902600211, 73076993300, 177908921984, 431510277616, 1043914139326
|
| 例子
|
n=4的一些解
..1..1..0..0....0..0..1..0....1..1..1..1....0..0..1..0....0..1..0..1
..1..0..0..1....0..0..1..0....1..1..1..0....1..0..1..0....0..1..0..0
..1..0..0..1....0..0..1..0....1..0..1..0....1..0..1..0....0..1..0..1
..1..0..0..1....0..0..1..0....1..1..0..0....1..0..1..0....0..1..0..1
..1..0..0..1....0..0..1..0....0..1..0..0....0..0..1..0....0..1..0..1
..1..0..0..1....0..0..1..0....0..1..0..0....1..0..1..0....0..1..0..1
|