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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 11 |
| 5 | 15 |
| 6 | 17 |
| 7 | 24 |
| 8 | 41 |
| 9 | 68 |
| 10 | 72 |
| 11 | 641 |
| 12 | 716 |
| 13 | 1139 |
| 14 | 1200 |
| 15 | 1661 |
| 16 | 3339 |
| 17 | 5181 |
| 18 | 68769 |
[1,3,9,11,15,17,24,41,68,72,641,716,1139,1200, 1661,3339,5181,68769] |