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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 1089 |
| 3 | 34225 |
| 4 | 833569 |
| 5 | 22819729 |
| 6 | 604028929 |
| 7 | 16226938225 |
| 8 | 434018757601 |
| 9 | 11630234757969 |
| 10 | 311473399634881 |
| 11 | 8343631521197361 |
| 12 | 223489568111529889 |
| 13 | 5986489381143819025 |
| 14 | 160355199781238376321 |
| 15 | 4295319737094655966449 |
[81,1089,34225,833569,22819729,604028929, 16226938225,434018757601,11630234757969, 311473399634881,8343631521197361, 223489568111529889,5986489381143819025, 160355199781238376321,4295319737094655966449] |