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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 25 |
| 4 | 625 |
| 5 | 18125 |
| 6 | 628125 |
| 7 | 25390625 |
| 8 | 1158515625 |
| 9 | 58308203125 |
| 10 | 3190470703125 |
| 11 | 187941103515625 |
| 12 | 11832996337890625 |
| 13 | 791834056298828125 |
| 14 | 56063448811767578125 |
| 15 | 4184231129351806640625 |
| 16 | 328154000925299072265625 |
| 17 | 26970505516268341064453125 |
| 18 | 2317475342690856231689453125 |
[1,5,25,625,18125,628125,25390625,1158515625, 58308203125,3190470703125,187941103515625, 11832996337890625,791834056298828125, 56063448811767578125,4184231129351806640625, 328154000925299072265625, 26970505516268341064453125, 2317475342690856231689453125] |