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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6561 |
| 2 | 83521 |
| 3 | 390625 |
| 4 | 1185921 |
| 5 | 2825761 |
| 6 | 5764801 |
| 7 | 10556001 |
| 8 | 17850625 |
| 9 | 28398241 |
| 10 | 43046721 |
| 11 | 62742241 |
| 12 | 88529281 |
| 13 | 121550625 |
| 14 | 163047361 |
| 15 | 214358881 |
| 16 | 276922881 |
| 17 | 352275361 |
| 18 | 442050625 |
| 19 | 547981281 |
| 20 | 671898241 |
[1,6561,83521,390625,1185921,2825761,5764801, 10556001,17850625,28398241,43046721,62742241, 88529281,121550625,163047361,214358881,276922881, 352275361,442050625,547981281,671898241] |