n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 6 |
4 | 3 |
5 | 120 |
6 | 45 |
7 | 1008 |
8 | 315 |
9 | 362880 |
10 | 14175 |
11 | 7983360 |
12 | 467775 |
13 | 6227020800 |
14 | 42567525 |
15 | 261534873600 |
16 | 638512875 |
17 | 355687428096000 |
18 | 97692469875 |
19 | 4865804016353280 |
20 | 9280784638125 |
21 | 51090942171709440000 |
22 | 126109485376875 |
23 | 397723334444384256000 |
24 | 147926426347074375 |
[1,1,1,6,3,120,45,1008,315,362880,14175,7983360, 467775,6227020800,42567525,261534873600,638512875, 355687428096000,97692469875,4865804016353280, 9280784638125,51090942171709440000, 126109485376875,397723334444384256000, 147926426347074375] |