n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 21 |
6 | 131 |
7 | 705 |
8 | 3515 |
9 | 17389 |
10 | 91739 |
11 | 547889 |
12 | 3746227 |
13 | 28241373 |
14 | 224124083 |
15 | 1821051233 |
16 | 15023818091 |
17 | 126366334125 |
18 | 1094358852075 |
19 | 9858890038513 |
20 | 92983173940419 |
21 | 918408372280477 |
22 | 9454438841355395 |
23 | 100728532687727329 |
24 | 1103649166937235259 |
[0,1,1,1,3,21,131,705,3515,17389,91739,547889, 3746227,28241373,224124083,1821051233,15023818091, 126366334125,1094358852075,9858890038513, 92983173940419,918408372280477,9454438841355395, 100728532687727329,1103649166937235259] |