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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 25 |
| 3 | 174 |
| 4 | 1270 |
| 5 | 10250 |
| 6 | 86027 |
| 7 | 738597 |
| 8 | 6497407 |
| 9 | 58047180 |
| 10 | 524733511 |
| 11 | 4789919653 |
| 12 | 44073509102 |
| 13 | 408231310520 |
[5,25,174,1270,10250,86027,738597,6497407, 58047180,524733511,4789919653,44073509102, 408231310520] |