n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 9 |
4 | 46 |
5 | 266 |
6 | 1636 |
7 | 10529 |
8 | 69974 |
9 | 476598 |
10 | 3309212 |
11 | 23336626 |
12 | 166686732 |
13 | 1203409180 |
14 | 8767531432 |
15 | 64378620609 |
16 | 475951684454 |
17 | 3539801952222 |
18 | 26466142669804 |
19 | 198814291126846 |
20 | 1499817211781796 |
21 | 11357495427008900 |
22 | 86302897747248024 |
23 | 657858710864911954 |
24 | 5029067212015246972 |
[1,2,9,46,266,1636,10529,69974,476598,3309212, 23336626,166686732,1203409180,8767531432, 64378620609,475951684454,3539801952222, 26466142669804,198814291126846,1499817211781796, 11357495427008900,86302897747248024, 657858710864911954,5029067212015246972] |