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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 13 |
| 5 | 21 |
| 6 | 23 |
| 7 | 45 |
| 8 | 63 |
| 9 | 553 |
| 10 | 1115 |
| 11 | 2471 |
| 12 | 2773 |
| 13 | 7363 |
| 14 | 25767 |
| 15 | 26265 |
| 16 | 32445 |
| 17 | 41291 |
| 18 | 55583 |
| 19 | 113637 |
| 20 | 376951 |
| 21 | 787017 |
| 22 | 858427 |
| 23 | 915371 |
| 24 | 1242207 |
| 25 | 1759247 |
| 26 | 3161195 |
[1,3,7,13,21,23,45,63,553,1115,2471,2773,7363, 25767,26265,32445,41291,55583,113637,376951, 787017,858427,915371,1242207,1759247,3161195] |