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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 3 |
| 9 | 15 |
| 10 | 27 |
| 11 | 43 |
| 12 | 77 |
| 13 | 211 |
| 14 | 651 |
| 15 | 2217 |
| 16 | 7655 |
| 17 | 29663 |
[1,1,1,1,1,1,1,3,15,27,43,77,211,651,2217,7655, 29663] |