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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 41 |
| 3 | 1481 |
| 4 | 53431 |
| 5 | 1988608 |
| 6 | 75185550 |
| 7 | 2858390497 |
| 8 | 108836266497 |
| 9 | 4145512873039 |
| 10 | 157910294056161 |
| 11 | 6015134806184686 |
[1,41,1481,53431,1988608,75185550,2858390497, 108836266497,4145512873039,157910294056161, 6015134806184686] |