n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 48 |
5 | 480 |
6 | 5040 |
7 | 65520 |
8 | 1048320 |
9 | 18869760 |
10 | 377395200 |
11 | 8462361600 |
12 | 209802700800 |
13 | 5666588928000 |
14 | 165900288153600 |
15 | 5242466541312000 |
16 | 177718177308672000 |
17 | 6430828699975680000 |
18 | 247490157968621568000 |
[0,1,2,6,48,480,5040,65520,1048320,18869760, 377395200,8462361600,209802700800,5666588928000, 165900288153600,5242466541312000, 177718177308672000,6430828699975680000, 247490157968621568000] |