n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 14 |
5 | 85 |
6 | 626 |
7 | 5387 |
8 | 52882 |
9 | 582149 |
10 | 7094234 |
11 | 94730611 |
12 | 1374650042 |
13 | 21529197077 |
14 | 361809517954 |
15 | 6492232196699 |
16 | 123852300381986 |
17 | 2502521367966277 |
18 | 53379537613065002 |
19 | 1198434678728086019 |
20 | 28245547605034208074 |
21 | 697186985180529270101 |
[1,1,1,3,14,85,626,5387,52882,582149,7094234, 94730611,1374650042,21529197077,361809517954, 6492232196699,123852300381986,2502521367966277, 53379537613065002,1198434678728086019, 28245547605034208074,697186985180529270101] |