n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 33 |
6 | 127 |
7 | 517 |
8 | 2171 |
9 | 9359 |
10 | 41139 |
11 | 183749 |
12 | 831479 |
13 | 3803859 |
14 | 17563853 |
15 | 81747331 |
16 | 383116181 |
17 | 1806427061 |
18 | 8563227837 |
19 | 40787427055 |
20 | 195106310221 |
21 | 936890791253 |
22 | 4514624943827 |
23 | 21823938003449 |
24 | 105804610564879 |
[1,1,3,9,33,127,517,2171,9359,41139,183749,831479, 3803859,17563853,81747331,383116181,1806427061, 8563227837,40787427055,195106310221,936890791253, 4514624943827,21823938003449,105804610564879] |