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| n | a(n) |
|---|---|
| 1 | 25 |
| 2 | 225 |
| 3 | 2025 |
| 4 | 55225 |
| 5 | 255025 |
| 6 | 555025 |
| 7 | 2002225 |
| 8 | 2205225 |
| 9 | 20205025 |
| 10 | 25050025 |
| 11 | 255520225 |
| 12 | 2500500025 |
| 13 | 5255525025 |
| 14 | 220200255025 |
| 15 | 250005000025 |
| 16 | 250505255025 |
| 17 | 2552022225025 |
| 18 | 2555250205225 |
| 19 | 20025222252025 |
[25,225,2025,55225,255025,555025,2002225,2205225, 20205025,25050025,255520225,2500500025,5255525025, 220200255025,250005000025,250505255025, 2552022225025,2555250205225,20025222252025] |