n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 87 |
4 | 543 |
5 | 3543 |
6 | 23823 |
7 | 163719 |
8 | 1143999 |
9 | 8099511 |
10 | 57959535 |
11 | 418441191 |
12 | 3043608351 |
13 | 22280372247 |
14 | 164008329423 |
15 | 1213166815047 |
16 | 9012417249663 |
17 | 67208553680247 |
18 | 502920171632943 |
19 | 3775020828459687 |
20 | 28415858155984863 |
21 | 214444848602732247 |
22 | 1622146752543427983 |
[1,3,15,87,543,3543,23823,163719,1143999,8099511, 57959535,418441191,3043608351,22280372247, 164008329423,1213166815047,9012417249663, 67208553680247,502920171632943,3775020828459687, 28415858155984863,214444848602732247, 1622146752543427983] |