n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 8 |
5 | 21 |
6 | 70 |
7 | 263 |
8 | 1072 |
9 | 4842 |
10 | 23351 |
11 | 120478 |
12 | 660372 |
13 | 3817413 |
14 | 23213642 |
15 | 147866712 |
16 | 983535760 |
17 | 6814069842 |
18 | 49050260795 |
19 | 366092901787 |
20 | 2827792333274 |
21 | 22566873540299 |
22 | 185782024439055 |
23 | 1575592459104692 |
24 | 13748110774214480 |
25 | 123281851161743801 |
26 | 1134880801686963605 |
[1,1,2,3,8,21,70,263,1072,4842,23351,120478, 660372,3817413,23213642,147866712,983535760, 6814069842,49050260795,366092901787,2827792333274, 22566873540299,185782024439055,1575592459104692, 13748110774214480,123281851161743801, 1134880801686963605] |