n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 16 |
4 | 120 |
5 | 1164 |
6 | 13965 |
7 | 200960 |
8 | 3387636 |
9 | 65644780 |
10 | 1440018822 |
11 | 35314018656 |
12 | 958109355632 |
13 | 28508766348664 |
14 | 923461269689985 |
15 | 32357613376995840 |
16 | 1219728800410342556 |
17 | 49225886778689380044 |
18 | 2118029584754948604618 |
[1,3,16,120,1164,13965,200960,3387636,65644780, 1440018822,35314018656,958109355632, 28508766348664,923461269689985,32357613376995840, 1219728800410342556,49225886778689380044, 2118029584754948604618] |