n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 94 |
6 | 460 |
7 | 2532 |
8 | 15420 |
9 | 102620 |
10 | 739512 |
11 | 5729192 |
12 | 47429896 |
13 | 417429800 |
14 | 3888426512 |
15 | 38192416048 |
16 | 394239339792 |
17 | 4264424937488 |
18 | 48212317486112 |
19 | 568395755184224 |
20 | 6973300915138656 |
21 | 88860103591344864 |
22 | 1174131206436335296 |
23 | 16061756166912244800 |
[1,1,2,6,22,94,460,2532,15420,102620,739512, 5729192,47429896,417429800,3888426512,38192416048, 394239339792,4264424937488,48212317486112, 568395755184224,6973300915138656, 88860103591344864,1174131206436335296, 16061756166912244800] |