n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 6 |
6 | 10 |
7 | 120 |
8 | 35 |
9 | 280 |
10 | 4536 |
11 | 362880 |
12 | 5775 |
13 | 39916800 |
14 | 24710400 |
15 | 8408400 |
16 | 2627625 |
17 | 1307674368000 |
18 | 2858856000 |
19 | 355687428096000 |
20 | 15277011750 |
21 | 4345461120000 |
22 | 4989349821456000 |
23 | 51090942171709440000 |
24 | 45092646348750 |
25 | 242362656927046656 |
[1,1,1,1,6,10,120,35,280,4536,362880,5775, 39916800,24710400,8408400,2627625,1307674368000, 2858856000,355687428096000,15277011750, 4345461120000,4989349821456000, 51090942171709440000,45092646348750, 242362656927046656] |