n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 8 |
4 | 50 |
5 | 239 |
6 | 1746 |
7 | 11557 |
8 | 82577 |
9 | 648289 |
10 | 4806475 |
11 | 36522073 |
12 | 300186549 |
13 | 2339239465 |
14 | 18355175927 |
15 | 154771130241 |
16 | 1236373902645 |
17 | 9941856371385 |
18 | 85100077549321 |
19 | 691573737441489 |
20 | 5648994401150475 |
[1,3,8,50,239,1746,11557,82577,648289,4806475, 36522073,300186549,2339239465,18355175927, 154771130241,1236373902645,9941856371385, 85100077549321,691573737441489,5648994401150475] |