| 数据
|
0, 5, 53, 498, 4013, 31689, 246743, 1915490, 14853287, 115216476, 894466395, 6951525006, 54087414608, 421322913539, 3285654843025, 25650404747946, 200449942963173, 1567942963397654, 12275547702488649, 96186181822236986
|
| 例子
|
n=4的一些解
..1..0..0. .1...0...0。0..1..0. .1..1..0. .0..0..0. .0..0..0. .0..1..0
..0..0..0. .0..1..1. .0..0..0. .0..1..0. .1...0...0。0..1..1. .1..0..1
..1..1..0. .0..1..0. .0...0..1。0..0..0. .1...0...0。0..1..1. .0..1..0
..0..0..1. .0..1..1. .1...0...0。1..0..1. .0..1..1. .0..1..0. .0..1..0
|