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| n | a(n) |
|---|---|
| 1 | 25 |
| 2 | 625 |
| 3 | 3399 |
| 4 | 33393 |
| 5 | 247631 |
| 6 | 2090927 |
| 7 | 16675001 |
| 8 | 136803627 |
| 9 | 1107817969 |
| 10 | 9020755725 |
| 11 | 73241249411 |
| 12 | 595437782873 |
| 13 | 4838237303149 |
| 14 | 39325402627329 |
| 15 | 319598032561739 |
| 16 | 2597506529364501 |
| 17 | 21110282812302019 |
| 18 | 171568068317114121 |
[25,625,3399,33393,247631,2090927,16675001, 136803627,1107817969,9020755725,73241249411, 595437782873,4838237303149,39325402627329, 319598032561739,2597506529364501, 21110282812302019,171568068317114121] |