n | a(n) |
---|---|
8 | 1 |
9 | 36 |
10 | 990 |
11 | 26070 |
12 | 705375 |
13 | 20151846 |
14 | 614506893 |
15 | 20073049425 |
16 | 702495121185 |
17 | 26300384653400 |
18 | 1050925859466912 |
19 | 44702294310795888 |
20 | 2018603140944000000 |
21 | 96508616036970572820 |
22 | 4872478522317533107200 |
23 | 259140537891648535707618 |
24 | 14485018396686799073181696 |
[1,36,990,26070,705375,20151846,614506893, 20073049425,702495121185,26300384653400, 1050925859466912,44702294310795888, 2018603140944000000,96508616036970572820, 4872478522317533107200,259140537891648535707618, 14485018396686799073181696] |