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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 375 |
| 3 | 4250 |
| 4 | 40000 |
| 5 | 328255 |
| 6 | 2420250 |
| 7 | 16355625 |
| 8 | 102754175 |
| 9 | 606511425 |
| 10 | 3390891675 |
| 11 | 18072320050 |
| 12 | 92298482475 |
| 13 | 453641400625 |
| 14 | 2153379245600 |
| 15 | 9902221659300 |
| 16 | 44225723552250 |
| 17 | 192274295402250 |
[1,25,375,4250,40000,328255,2420250,16355625, 102754175,606511425,3390891675,18072320050, 92298482475,453641400625,2153379245600, 9902221659300,44225723552250,192274295402250] |