|
| |
|
| A252438型 |
| 每3X3子块行和对角线和等于0 2 4 6或7，每列和反对角线之和不等于0 2 6或7的（5+2）X（n+2）0..3数组的数目 |
|
1
|
|
|
|
1152, 2993, 9643, 20187, 85563, 302218, 652210, 2786331, 9882896, 21364917, 91892076, 329431402, 713269143, 3086478489, 11174739662, 24228015605, 105441386320, 385277405784, 836364909521, 3658820031018, 13479381001111
(列表;图表;参考;听;历史;文本;内部格式)
|
|
|
|
抵消
|
1,1
|
|
|
评论
|
|
|
|
链接
|
|
|
|
配方奶粉
|
经验：a（n）=70*a（n-3）-1310*a（n-6）+2636*a（n9）+32077*a（-12）-114560*a（n-15）-249921*a（-n18）+1417321*a（ni1）+345748*a（nn-24）-783770*a当n>58时，（n-45）+323236*a（n-48）-26094*a（n-51）+840*a（n54）
|
|
|
示例
|
n=4的一些解
..3..2..2..0..2..2....1..3..3..1..0..3....3..2..2..3..2..2....1..0..3..1..3..0
..2..3..2..2..3..2....2..0..2..2..3..2....0..1..3..3..1..0....2..3..2..2..3..2
..0..3..1..3..3..1....2..2..3..2..2..0....2..2..0..2..2..3....2..2..3..2..2..3
..3..2..2..0..2..2....1..3..3..1..3..3....3..2..2..3..2..2....1..3..3..1..3..3
..2..0..2..2..3..2....2..0..2..2..3..2....3..1..3..3..1..0....2..0..2..2..3..2
..3..3..1..3..0..1....2..2..3..2..2..0....2..2..0..2..2..3....2..2..3..2..2..0
..0..2..2..3..2..2....1..3..3..1..0..3....3..2..2..3..2..2....1..3..3..1..0..3
|
|
|
交叉参考
|
|
|
|
关键词
|
非n
|
|
|
作者
|
|
|
|
状态
|
已批准
|
| |
|
|
