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| n | a(n) |
|---|---|
| 1 | 46 |
| 2 | 649 |
| 3 | 1329 |
| 4 | 352339 |
| 5 | 8982755 |
| 6 | 18172239 |
| 7 | 6469118415 |
| 8 | 184228587259 |
| 9 | 391072885802 |
[46,649,1329,352339,8982755,18172239,6469118415, 184228587259,391072885802] |