n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 33 |
4 | 241 |
5 | 2391 |
6 | 30903 |
7 | 499000 |
8 | 9804344 |
9 | 230270387 |
10 | 6364661087 |
11 | 204142831017 |
12 | 7508991442137 |
13 | 313657014920304 |
14 | 14753881974826196 |
15 | 775751424297987671 |
16 | 45294591976852153687 |
17 | 2919681469388967044215 |
[1,2,6,33,241,2391,30903,499000,9804344,230270387, 6364661087,204142831017,7508991442137, 313657014920304,14753881974826196, 775751424297987671,45294591976852153687, 2919681469388967044215] |