n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 22 |
6 | 77 |
7 | 294 |
8 | 1054 |
9 | 3788 |
10 | 11326 |
11 | 24790 |
12 | 103641 |
13 | 164559 |
14 | 532510 |
15 | 1574252 |
16 | 2939898 |
17 | 4761009 |
18 | 21048218 |
19 | 24306306 |
20 | 95707819 |
21 | 205176450 |
[1,1,3,7,22,77,294,1054,3788,11326,24790,103641, 164559,532510,1574252,2939898,4761009,21048218, 24306306,95707819,205176450] |