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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 65 |
| 6 | 6529 |
| 7 | 136091233 |
| 8 | 41625259047416909 |
| 9 | 2189507051227161558033650829868135 |
| 10 | 75931290362065676573711484986356332365619562746656079489987281066955 |
[1,2,3,5,65,6529,136091233,41625259047416909, 2189507051227161558033650829868135, 75931290362065676573711484986356332365619562746656\ 079489987281066955] |