n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 8 |
4 | 60 |
5 | 480 |
6 | 4200 |
7 | 40320 |
8 | 423360 |
9 | 4838400 |
10 | 59875200 |
11 | 798336000 |
12 | 11416204800 |
13 | 174356582400 |
14 | 2833294464000 |
15 | 48819843072000 |
16 | 889218570240000 |
17 | 17072996548608000 |
18 | 344661117825024000 |
19 | 7298706024529920000 |
20 | 161787983543746560000 |
[0,1,8,60,480,4200,40320,423360,4838400,59875200, 798336000,11416204800,174356582400,2833294464000, 48819843072000,889218570240000,17072996548608000, 344661117825024000,7298706024529920000, 161787983543746560000] |