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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 17 |
| 3 | 182 |
| 4 | 2480 |
| 5 | 39386 |
| 6 | 683425 |
| 7 | 12420653 |
| 8 | 231663025 |
| 9 | 4389204048 |
| 10 | 8404711549 |
| 11 | 1622042005924 |
| 12 | 31498163968678 |
| 13 | 614779607286912 |
| 14 | 12051129466850869 |
[2,17,182,2480,39386,683425,12420653,231663025, 4389204048,8404711549,1622042005924, 31498163968678,614779607286912,12051129466850869] |