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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 25 |
| 3 | 125 |
| 4 | 625 |
| 5 | 3121 |
| 6 | 15605 |
| 7 | 78025 |
| 8 | 390125 |
| 9 | 1950625 |
| 10 | 9753123 |
| 11 | 48765615 |
| 12 | 243828075 |
| 13 | 1219140375 |
| 14 | 6095701875 |
| 15 | 30478509371 |
| 16 | 152392546855 |
| 17 | 761962734275 |
| 18 | 3809813671375 |
| 19 | 19049068356875 |
| 20 | 95245341784374 |
| 21 | 476226708921870 |
[1,5,25,125,625,3121,15605,78025,390125,1950625, 9753123,48765615,243828075,1219140375,6095701875, 30478509371,152392546855,761962734275, 3809813671375,19049068356875,95245341784374, 476226708921870] |