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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 | 57 |
| 12 | 57 |
| 13 | 369 |
| 14 | 369 |
| 15 | 6075 |
| 16 | 6075 |
| 17 | 152201 |
| 18 | 152201 |
| 19 | 4520107 |
| 20 | 4520107 |
| 21 | 199476793 |
| 22 | 199476793 |
| 23 | 15394540581 |
[1,1,1,1,1,1,1,1,17,17,57,57,369,369,6075,6075, 152201,152201,4520107,4520107,199476793,199476793, 15394540581] |