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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | 1 |
| 7 | 3 |
| 8 | 13 |
| 9 | 169 |
| 10 | 25 |
| 11 | 243 |
| 12 | 375 |
| 13 | 11 |
| 14 | 49 |
| 15 | 7 |
| 16 | 3 |
| 17 | 18225 |
| 18 | 71875 |
| 19 | 4913 |
| 20 | 1701 |
| 21 | 144027 |
| 22 | 1825 |
| 23 | 3483 |
| 24 | 2197 |
| 25 | 9156027 |
| 26 | 131989 |
| 27 | 1103 |
| 28 | 5103 |
| 29 | 38525 |
| 30 | 458703 |
| 31 | 1523 |
| 32 | 3483891 |
| 33 | 19283525 |
[1,1,1,1,5,1,3,13,169,25,243,375,11,49,7,3,18225, 71875,4913,1701,144027,1825,3483,2197,9156027, 131989,1103,5103,38525,458703,1523,3483891, 19283525] |