n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 6 |
6 | 13 |
7 | 30 |
8 | 76 |
9 | 220 |
10 | 700 |
11 | 2520 |
12 | 10503 |
13 | 51368 |
14 | 306328 |
15 | 2313432 |
16 | 23069977 |
17 | 314605256 |
18 | 5991456377 |
19 | 160321885780 |
20 | 6008649072476 |
21 | 313490988938680 |
22 | 22641945794083024 |
23 | 2254587340059129076 |
24 | 308683056074116543631 |
[1,1,2,3,6,13,30,76,220,700,2520,10503,51368, 306328,2313432,23069977,314605256,5991456377, 160321885780,6008649072476,313490988938680, 22641945794083024,2254587340059129076, 308683056074116543631] |