n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 19 |
5 | 66 |
6 | 236 |
7 | 868 |
8 | 3235 |
9 | 12190 |
10 | 46252 |
11 | 176484 |
12 | 676270 |
13 | 2600612 |
14 | 10030008 |
15 | 38781096 |
16 | 150273315 |
17 | 583407990 |
18 | 2268795980 |
19 | 8836340260 |
20 | 34461678394 |
21 | 134564560988 |
22 | 526024917288 |
23 | 2058358034616 |
24 | 8061901596814 |
25 | 31602652961516 |
26 | 123979635837176 |
27 | 486734861612328 |
[1,2,6,19,66,236,868,3235,12190,46252,176484, 676270,2600612,10030008,38781096,150273315, 583407990,2268795980,8836340260,34461678394, 134564560988,526024917288,2058358034616, 8061901596814,31602652961516,123979635837176, 486734861612328] |