n | a(n) |
---|---|
1 | 2 |
2 | 8 |
3 | 24 |
4 | 264 |
5 | 1320 |
6 | 22440 |
7 | 157080 |
8 | 2356200 |
9 | 18849600 |
10 | 339292800 |
11 | 3053635200 |
12 | 174057206400 |
13 | 2262743683200 |
14 | 61094079446400 |
15 | 855317112249600 |
16 | 25659513367488000 |
17 | 821104427759616000 |
18 | 13137670844153856000 |
[2,8,24,264,1320,22440,157080,2356200,18849600, 339292800,3053635200,174057206400,2262743683200, 61094079446400,855317112249600,25659513367488000, 821104427759616000,13137670844153856000] |