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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 23 |
| 3 | 331 |
| 4 | 7133 |
| 5 | 205901 |
| 6 | 7470475 |
| 7 | 326932299 |
| 8 | 16768124217 |
| 9 | 986753701657 |
| 10 | 65548017270791 |
| 11 | 4852285640543639 |
| 12 | 396133183892522389 |
| 13 | 35359325061987638661 |
| 14 | 3426053898460864501251 |
| 15 | 358128187005971803014211 |
| 16 | 40172982580368589391407217 |
| 17 | 4813677071886578522596221233 |
[1,3,23,331,7133,205901,7470475,326932299, 16768124217,986753701657,65548017270791, 4852285640543639,396133183892522389, 35359325061987638661,3426053898460864501251, 358128187005971803014211, 40172982580368589391407217, 4813677071886578522596221233] |