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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 87 |
| 3 | 6624 |
| 4 | 2265691 |
| 5 | 3154769585 |
| 6 | 16761785898550 |
| 7 | 346245388962998639 |
| 8 | 27933597031900237580649 |
| 9 | 8787110268003730673863070121 |
| 10 | 10774541106851322777417902818902431 |
[3,87,6624,2265691,3154769585,16761785898550, 346245388962998639,27933597031900237580649, 8787110268003730673863070121, 10774541106851322777417902818902431] |