n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 16 |
3 | 224 |
4 | 4480 |
5 | 116480 |
6 | 3727360 |
7 | 141639680 |
8 | 6232145920 |
9 | 311607296000 |
10 | 17450008576000 |
11 | 1081900531712000 |
12 | 73569236156416000 |
13 | 5444123475574784000 |
14 | 435529878045982720000 |
15 | 37455569511954513920000 |
16 | 3445912395099815280640000 |
17 | 337699414719781897502720000 |
[1,2,16,224,4480,116480,3727360,141639680, 6232145920,311607296000,17450008576000, 1081900531712000,73569236156416000, 5444123475574784000,435529878045982720000, 37455569511954513920000,3445912395099815280640000, 337699414719781897502720000] |