n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 10 |
4 | 42 |
5 | 212 |
6 | 1274 |
7 | 8924 |
8 | 71398 |
9 | 642586 |
10 | 6425860 |
11 | 70684467 |
12 | 848213615 |
13 | 11026777001 |
14 | 154374878018 |
15 | 2315623170283 |
16 | 37049970724531 |
17 | 629849502317038 |
18 | 11337291041706700 |
19 | 215408529792427309 |
20 | 4308170595848546191 |
[1,3,10,42,212,1274,8924,71398,642586,6425860, 70684467,848213615,11026777001,154374878018, 2315623170283,37049970724531,629849502317038, 11337291041706700,215408529792427309, 4308170595848546191] |