n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 55 |
4 | 315 |
5 | 1871 |
6 | 11203 |
7 | 67191 |
8 | 403115 |
9 | 2418655 |
10 | 14511891 |
11 | 87071303 |
12 | 522427771 |
13 | 3134566575 |
14 | 18807399395 |
15 | 112844396311 |
16 | 677066377803 |
17 | 4062398266751 |
18 | 24374389600435 |
19 | 146246337602535 |
20 | 877478025615131 |
21 | 5264868153690703 |
22 | 31589208922144131 |
23 | 189535253532864695 |
[1,3,11,55,315,1871,11203,67191,403115,2418655, 14511891,87071303,522427771,3134566575, 18807399395,112844396311,677066377803, 4062398266751,24374389600435,146246337602535, 877478025615131,5264868153690703, 31589208922144131,189535253532864695] |