n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 8 |
5 | 30 |
6 | 144 |
7 | 280 |
8 | 5760 |
9 | 45360 |
10 | 44800 |
11 | 3991680 |
12 | 43545600 |
13 | 172972800 |
14 | 6706022400 |
15 | 93405312000 |
16 | 42268262400 |
17 | 22230464256000 |
18 | 376610217984000 |
19 | 250298560512000 |
20 | 11640679464960000 |
21 | 196503623737344000 |
22 | 17841281393295360000 |
[1,1,2,3,8,30,144,280,5760,45360,44800,3991680, 43545600,172972800,6706022400,93405312000, 42268262400,22230464256000,376610217984000, 250298560512000,11640679464960000, 196503623737344000,17841281393295360000] |