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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 25 |
| 4 | 125 |
| 5 | 625 |
| 6 | 3126 |
| 7 | 15655 |
| 8 | 78650 |
| 9 | 397625 |
| 10 | 2031875 |
| 11 | 10553128 |
| 12 | 56047040 |
| 13 | 306020575 |
| 14 | 1723544750 |
| 15 | 10015548750 |
| 16 | 59871903136 |
| 17 | 366244516505 |
| 18 | 2278239803025 |
| 19 | 14324961668875 |
| 20 | 90586470006875 |
| 21 | 573925269278169 |
| 22 | 3633524853973370 |
| 23 | 22949197586894725 |
| 24 | 144473478898021750 |
[1,5,25,125,625,3126,15655,78650,397625,2031875, 10553128,56047040,306020575,1723544750, 10015548750,59871903136,366244516505, 2278239803025,14324961668875,90586470006875, 573925269278169,3633524853973370, 22949197586894725,144473478898021750] |