| 数据
|
0, 2, 4, 13, 63, 253, 953, 3802, 15108, 59873, 236880, 937385, 3712010, 14698259, 58191701, 230387790, 912154985, 3611432057, 14298421381, 56610374096, 224132267313, 887386743512, 3513350051164, 13910087469748, 55072945693414
|
| 例子
|
n=7的一些解
..0..0..0. .0..0..0. .0..0..1. .0..0..0. .0..1..1. .0..1..1. .0..1..1
..0..1..0. .0..1..0。0..1..1. .0..1..0. .0..0..1. .0..0..1. .0...0..1
..1..1..1. .0..1..1. .1..0..0. .0..1..1. .0..1..1. .1..0..0. .0..1..1
..0..0..1. .0..1..1. .1..0..0. .0..1..0。0..0..1. .1..1..1. .1..0..1
..0..0..1. .0..0..0. .1..1..0. .0..0..0. .0..1..1. .1..1..1. .1..0..0
..1..1..0. .1..0..1. .1..0..0. .0..1..0. .0..1..0. .1..0..0. .1..0..0
..1..0..0. .1..1..1. .1..1..0. .1..1..1. .0...0...0。1..1..0. .1..1..0
|