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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 6 |
| 2 | 183 |
| 3 | 3285 |
| 4 | 47787 |
| 5 | 627789 |
| 6 | 7777791 |
| 7 | 92777793 |
| 8 | 1077777795 |
| 9 | 12277777797 |
| 10 | 137777777799 |
| 11 | 1527777777801 |
| 12 | 16777777777803 |
| 13 | 182777777777805 |
| 14 | 1977777777777807 |
| 15 | 21277777777777809 |
| 16 | 227777777777777811 |
[0,6,183,3285,47787,627789,7777791,92777793, 1077777795,12277777797,137777777799,1527777777801, 16777777777803,182777777777805,1977777777777807, 21277777777777809,227777777777777811] |