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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 132 |
| 3 | 1425 |
| 4 | 16340 |
| 5 | 201602 |
| 6 | 2594128 |
| 7 | 34416318 |
| 8 | 465449155 |
| 9 | 6367873016 |
| 10 | 87714252101 |
| 11 | 1213023621452 |
| 12 | 16813627618462 |
| 13 | 233358837307365 |
| 14 | 3241261100572837 |
| 15 | 45039211440470945 |
| 16 | 626000092576446308 |
[13,132,1425,16340,201602,2594128,34416318, 465449155,6367873016,87714252101,1213023621452, 16813627618462,233358837307365,3241261100572837, 45039211440470945,626000092576446308] |