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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 25 |
| 3 | 1331 |
| 4 | 83521 |
| 5 | 28629151 |
| 6 | 4750104241 |
| 7 | 2488651484819 |
| 8 | 406067677556641 |
| 9 | 186940255267540403 |
| 10 | 236736367459211723401 |
| 11 | 138624799340320978519423 |
| 12 | 224282727500720205065439601 |
| 13 | 193682063179592517160024627139 |
[3,25,1331,83521,28629151,4750104241, 2488651484819,406067677556641,186940255267540403, 236736367459211723401,138624799340320978519423, 224282727500720205065439601, 193682063179592517160024627139] |