| 数据
|
2064, 7742, 31740, 151304, 738628, 3840512, 20547980, 114726620, 659505140, 3907997608, 23683903008, 146366102920, 917675482460, 5819531525020, 37212305290312, 239438472633404, 1547580286368172, 10035656593477640
|
| 例子
|
n=4的一些解
..3..0..4..3..0....1..1..1..1..4....0..1..0..4..1....0..1..0..4..0
..3..0..0..3..0....0..4..0..4..1....1..4..1..1..0....1..4..1..1..1
..3..4..0..3..0....4..4..4..4..1....4..1..0..4..1....4..1..0..4..0
..3..0..0..3..0....0..4..0..4..1....4..1..4..4..1....1..4..1..1..1
..3..4..0..3..0....1..1..1..1..4....1..4..1..1..4....0..1..4..4..0
|