|
|
A197359号 |
| nX3 0..4阵列的数量,每个元素x等于其水平和垂直邻居的数量,等于4,3,1,1,1,x=0,1,2,3,4 |
|
1
|
|
|
1, 9, 33, 113, 593, 2435, 10317, 45615, 195093, 841571, 3646693, 15718319, 67872219, 293228491, 1265855985, 5466238427, 23604968149, 101924529475, 440126714041, 1900525775017, 8206607484875, 35437081228013, 153021248588503
(列表;图表;参考;听;历史;文本;内部格式)
|
|
|
抵消
|
1,2
|
|
评论
|
每个0紧挨着0 4,每个1紧挨着1 3,每个2紧挨着2 1,每个3紧挨着3 1,每个4紧挨着4 1
|
|
链接
|
|
|
公式
|
经验:a(n)=a(n-1)+2*a(n-2)+24*a(n-3)+75*a(-n4)+159*a(n5)+275*a+19536*a(n-18)-12960*a(n-19)-2592*a(-n20)
|
|
示例
|
n=4的一些解
..1..3..1....1..3..1....0..0..0....0..0..0....0..1..2....0..1..2....0..2..1
..1..1..0....1..1..2....0..0..1....0..0..0....1..3..1....0..3..1....1..1..3
..3..1..0....3..1..0....0..1..3....1..3..1....0..0..0....0..1..2....3..1..1
..1..2..0....1..0..0....0..2..1....0..1..0....0..0..0....0..0..0....1..2..0
|
|
交叉参考
|
|
|
关键词
|
非n
|
|
作者
|
|
|
状态
|
经核准的
|
|
|
|