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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 6 |
| 3 | 69 |
| 4 | 6996 |
| 5 | 69969669 |
| 6 | 6996966996696996 |
| 7 | 69969669966969969669699669969669 |
| 8 | 6996966996696996966969966996966996696996699696696996966996696996 |
[0,1,6,69,6996,69969669,6996966996696996, 69969669966969969669699669969669, 69969669966969969669699669969669966969966996966969\ 96966996696996] |