n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 12 |
5 | 52 |
6 | 120 |
7 | 752 |
8 | 3200 |
9 | 19968 |
10 | 84480 |
11 | 863232 |
12 | 3637248 |
13 | 44384256 |
14 | 275152896 |
15 | 2254307328 |
16 | 18459131904 |
17 | 298743496704 |
18 | 1846819160064 |
19 | 33568893960192 |
20 | 274421835104256 |
21 | 3340027488632832 |
22 | 33963860494909440 |
23 | 752840786973818880 |
24 | 6146715129678397440 |
25 | 123926213264670720000 |
[1,2,5,12,52,120,752,3200,19968,84480,863232, 3637248,44384256,275152896,2254307328,18459131904, 298743496704,1846819160064,33568893960192, 274421835104256,3340027488632832, 33963860494909440,752840786973818880, 6146715129678397440,123926213264670720000] |