n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 42 |
6 | 150 |
7 | 576 |
8 | 2266 |
9 | 9966 |
10 | 47466 |
11 | 237019 |
12 | 1224703 |
13 | 6429152 |
14 | 35842344 |
15 | 212946552 |
16 | 1325810173 |
17 | 8488092454 |
18 | 55276544436 |
19 | 362961569008 |
20 | 2465240278980 |
21 | 17538501945077 |
22 | 130454679958312 |
23 | 1002493810175093 |
24 | 7838007702606372 |
25 | 61789072382062638 |
[1,1,2,5,13,42,150,576,2266,9966,47466,237019, 1224703,6429152,35842344,212946552,1325810173, 8488092454,55276544436,362961569008,2465240278980, 17538501945077,130454679958312,1002493810175093, 7838007702606372,61789072382062638] |