n | a(n) |
---|---|
0 | 2 |
1 | 1 |
2 | 6 |
3 | 6 |
4 | 120 |
5 | 120 |
6 | 6480 |
7 | 5040 |
8 | 685440 |
9 | 362880 |
10 | 119750400 |
11 | 39916800 |
12 | 31135104000 |
13 | 6227020800 |
14 | 11245999564800 |
15 | 1307674368000 |
16 | 5377157001216000 |
17 | 355687428096000 |
18 | 3284417711038464000 |
[2,1,6,6,120,120,6480,5040,685440,362880, 119750400,39916800,31135104000,6227020800, 11245999564800,1307674368000,5377157001216000, 355687428096000,3284417711038464000] |