n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 55 |
6 | 248 |
7 | 1357 |
8 | 8809 |
9 | 66323 |
10 | 568238 |
11 | 5456689 |
12 | 58023731 |
13 | 676566591 |
14 | 8581174564 |
15 | 117594655061 |
16 | 1731202603885 |
17 | 27245237545195 |
18 | 456412842304058 |
19 | 8108103076572185 |
20 | 152241172196748919 |
21 | 3012385194815011031 |
22 | 62647074875098987344 |
23 | 1366035816618537022525 |
[1,1,2,5,15,55,248,1357,8809,66323,568238,5456689, 58023731,676566591,8581174564,117594655061, 1731202603885,27245237545195,456412842304058, 8108103076572185,152241172196748919, 3012385194815011031,62647074875098987344, 1366035816618537022525] |