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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 173 |
| 3 | 2251 |
| 4 | 29269 |
| 5 | 380503 |
| 6 | 4946581 |
| 7 | 64305559 |
| 8 | 835972301 |
| 9 | 10867639987 |
| 10 | 141279319843 |
| 11 | 1836631157971 |
| 12 | 23876205053627 |
| 13 | 310390665697169 |
| 14 | 4035078654063221 |
| 15 | 52456022502821891 |
| 16 | 681928292536684637 |
[13,173,2251,29269,380503,4946581,64305559, 835972301,10867639987,141279319843,1836631157971, 23876205053627,310390665697169,4035078654063221, 52456022502821891,681928292536684637] |