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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 225 |
| 4 | 729 |
| 5 | 18225 |
| 6 | 65025 |
| 7 | 140625 |
| 8 | 531441 |
| 9 | 5267025 |
| 10 | 11390625 |
| 11 | 13286025 |
| 12 | 18792225 |
| 13 | 40640625 |
| 14 | 87890625 |
| 15 | 1522170225 |
| 16 | 2197265625 |
| 17 | 3291890625 |
| 18 | 3839661225 |
| 19 | 5430953025 |
| 20 | 7119140625 |
| 21 | 8303765625 |
| 22 | 11745140625 |
| 23 | 25400390625 |
[1,9,225,729,18225,65025,140625,531441,5267025, 11390625,13286025,18792225,40640625,87890625, 1522170225,2197265625,3291890625,3839661225, 5430953025,7119140625,8303765625,11745140625, 25400390625] |