n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 16 |
3 | 180 |
4 | 2688 |
5 | 50160 |
6 | 1123200 |
7 | 29342880 |
8 | 876072960 |
9 | 29425939200 |
10 | 1098191001600 |
11 | 45083550758400 |
12 | 2019049224192000 |
13 | 97957525739673600 |
14 | 5118154482618777600 |
15 | 286518188551795200000 |
16 | 17108806991486386176000 |
[1,2,16,180,2688,50160,1123200,29342880,876072960, 29425939200,1098191001600,45083550758400, 2019049224192000,97957525739673600, 5118154482618777600,286518188551795200000, 17108806991486386176000] |