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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 4999 |
| 3 | 183051647 |
| 4 | 432993880473035 |
| 5 | 66327998573151304476953 |
| 6 | 657786158098403835519781868703261 |
| 7 | 422337116619421509499034109697459735541947069 |
[1,9,4999,183051647,432993880473035, 66327998573151304476953, 657786158098403835519781868703261, 422337116619421509499034109697459735541947069] |