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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 96 |
| 3 | 696 |
| 4 | 9696 |
| 5 | 69696 |
| 6 | 669696 |
| 7 | 6669696 |
| 8 | 96669696 |
| 9 | 696669696 |
| 10 | 9696669696 |
| 11 | 69696669696 |
| 12 | 969696669696 |
| 13 | 9969696669696 |
| 14 | 69969696669696 |
| 15 | 969969696669696 |
| 16 | 9969969696669696 |
| 17 | 99969969696669696 |
| 18 | 999969969696669696 |
| 19 | 9999969969696669696 |
| 20 | 99999969969696669696 |
| 21 | 699999969969696669696 |
[6,96,696,9696,69696,669696,6669696,96669696, 696669696,9696669696,69696669696,969696669696, 9969696669696,69969696669696,969969696669696, 9969969696669696,99969969696669696, 999969969696669696,9999969969696669696, 99999969969696669696,699999969969696669696] |