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| n | a(n) |
|---|---|
| 1 | 169 |
| 2 | 289 |
| 3 | 625 |
| 4 | 2809 |
| 5 | 7225 |
| 6 | 18769 |
| 7 | 93025 |
| 8 | 243049 |
| 9 | 635209 |
| 10 | 3157729 |
| 11 | 8254129 |
| 12 | 21576025 |
| 13 | 107267449 |
| 14 | 280395025 |
| 15 | 732947329 |
| 16 | 3643933225 |
| 17 | 9525174409 |
| 18 | 24898630849 |
| 19 | 123786459889 |
| 20 | 323575532569 |
| 21 | 845820499225 |
| 22 | 4205095700689 |
[169,289,625,2809,7225,18769,93025,243049,635209, 3157729,8254129,21576025,107267449,280395025, 732947329,3643933225,9525174409,24898630849, 123786459889,323575532569,845820499225, 4205095700689] |