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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 17 |
| 10 | 17 |
| 11 | 85 |
| 12 | 85 |
| 13 | 693 |
| 14 | 693 |
| 15 | 9501 |
| 16 | 9501 |
| 17 | 265597 |
| 18 | 265597 |
| 19 | 10400895 |
| 20 | 10400895 |
| 21 | 596407005 |
| 22 | 596407005 |
[1,1,1,1,1,1,1,1,17,17,85,85,693,693,9501,9501, 265597,265597,10400895,10400895,596407005, 596407005] |