n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 720 |
7 | 4320 |
8 | 25920 |
9 | 155520 |
10 | 858120 |
11 | 4498296 |
12 | 23026074 |
13 | 117437746 |
14 | 604907611 |
15 | 3173843821 |
16 | 16812885360 |
17 | 89389649752 |
18 | 475278119520 |
19 | 2522515936704 |
20 | 13358285027136 |
21 | 70620776750592 |
22 | 372942661980096 |
23 | 1968609876492672 |
[1,2,6,24,120,720,4320,25920,155520,858120, 4498296,23026074,117437746,604907611,3173843821, 16812885360,89389649752,475278119520, 2522515936704,13358285027136,70620776750592, 372942661980096,1968609876492672] |