n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 21 |
4 | 217 |
5 | 2814 |
6 | 42510 |
7 | 718647 |
8 | 13270944 |
9 | 263532276 |
10 | 5567092665 |
11 | 124143735663 |
12 | 2905528740060 |
13 | 71058906460091 |
14 | 1809695198254281 |
15 | 47861102278428198 |
16 | 1311488806252697283 |
17 | 37164457324943708739 |
[1,1,3,21,217,2814,42510,718647,13270944, 263532276,5567092665,124143735663,2905528740060, 71058906460091,1809695198254281,47861102278428198, 1311488806252697283,37164457324943708739] |