n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 60 |
4 | 504 |
5 | 5040 |
6 | 61200 |
7 | 856800 |
8 | 13749120 |
9 | 247484160 |
10 | 4953312000 |
11 | 108972864000 |
12 | 2615827737600 |
13 | 68011521177600 |
14 | 1904409771264000 |
15 | 57132293137920000 |
16 | 1828254303203328000 |
17 | 62160646308913152000 |
[1,2,10,60,504,5040,61200,856800,13749120, 247484160,4953312000,108972864000,2615827737600, 68011521177600,1904409771264000,57132293137920000, 1828254303203328000,62160646308913152000] |