n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 120 |
4 | 6912 |
5 | 631680 |
6 | 84211200 |
7 | 15432560640 |
8 | 3722677862400 |
9 | 1143584003358720 |
10 | 435902085306777600 |
11 | 201889940373209088000 |
12 | 111673403387053395148800 |
13 | 72713691524377589317632000 |
14 | 55052849030095232395798118400 |
15 | 47957058157063329359371173888000 |
[0,4,120,6912,631680,84211200,15432560640, 3722677862400,1143584003358720,435902085306777600, 201889940373209088000,111673403387053395148800, 72713691524377589317632000, 55052849030095232395798118400, 47957058157063329359371173888000] |