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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 350 |
| 3 | 7504 |
| 4 | 161593 |
| 5 | 3481214 |
| 6 | 75000049 |
| 7 | 1615826124 |
| 8 | 34811916483 |
| 9 | 750000000499 |
[1,16,350,7504,161593,3481214,75000049,1615826124, 34811916483,750000000499] |