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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 64 |
| 3 | 729 |
| 4 | 4913 |
| 5 | 35937 |
| 6 | 274625 |
| 7 | 2146689 |
| 8 | 16974593 |
| 9 | 135005697 |
| 10 | 1076890625 |
| 11 | 8602523649 |
| 12 | 68769820673 |
| 13 | 549957165057 |
| 14 | 4398851866625 |
| 15 | 35187593412609 |
| 16 | 281487861809153 |
| 17 | 2251851353686017 |
| 18 | 18014604668698625 |
| 19 | 144116012711149569 |
[8,64,729,4913,35937,274625,2146689,16974593, 135005697,1076890625,8602523649,68769820673, 549957165057,4398851866625,35187593412609, 281487861809153,2251851353686017, 18014604668698625,144116012711149569] |