n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 1 |
4 | 12 |
5 | 24 |
6 | 720 |
7 | 144 |
8 | 2016 |
9 | 40320 |
10 | 725760 |
11 | 3628800 |
12 | 47900160 |
13 | 239500800 |
14 | 276756480 |
15 | 17435658240 |
16 | 871782912000 |
17 | 4184557977600 |
18 | 711374856192000 |
19 | 43553562624000 |
20 | 57926238289920000 |
21 | 3649353012264960000 |
22 | 324386934423552000 |
23 | 1124000727777607680000 |
[1,2,1,12,24,720,144,2016,40320,725760,3628800, 47900160,239500800,276756480,17435658240, 871782912000,4184557977600,711374856192000, 43553562624000,57926238289920000, 3649353012264960000,324386934423552000, 1124000727777607680000] |