n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 96 |
6 | 330 |
7 | 1066 |
8 | 3451 |
9 | 11581 |
10 | 39264 |
11 | 132784 |
12 | 446460 |
13 | 1497108 |
14 | 5023696 |
15 | 16878488 |
16 | 56739141 |
17 | 190697893 |
18 | 640763258 |
19 | 2152824662 |
20 | 7233281108 |
21 | 24304468132 |
22 | 81666680202 |
23 | 274410023170 |
24 | 922040339607 |
25 | 3098121457769 |
[1,2,6,24,96,330,1066,3451,11581,39264,132784, 446460,1497108,5023696,16878488,56739141, 190697893,640763258,2152824662,7233281108, 24304468132,81666680202,274410023170,922040339607, 3098121457769] |