n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 82 |
6 | 340 |
7 | 1478 |
8 | 6622 |
9 | 30433 |
10 | 142331 |
11 | 676203 |
12 | 3248579 |
13 | 15776459 |
14 | 77196573 |
15 | 380849394 |
16 | 1888606247 |
17 | 9430534212 |
18 | 47236684433 |
19 | 238214461960 |
20 | 1202007809362 |
21 | 6116704517639 |
22 | 30997312336216 |
23 | 159384351652358 |
[1,1,2,6,21,82,340,1478,6622,30433,142331,676203, 3248579,15776459,77196573,380849394,1888606247, 9430534212,47236684433,238214461960,1202007809362, 6116704517639,30997312336216,159384351652358] |