| n | a(n) |
|---|---|
| 1 | 2178 |
| 2 | 6534 |
| 3 | 21978 |
| 4 | 65934 |
| 5 | 219978 |
| 6 | 659934 |
| 7 | 2199978 |
| 8 | 6599934 |
| 9 | 21782178 |
| 10 | 21999978 |
| 11 | 65346534 |
| 12 | 65999934 |
| 13 | 217802178 |
| 14 | 219999978 |
| 15 | 653406534 |
| 16 | 659999934 |
| 17 | 2178002178 |
| 18 | 2197821978 |
| 19 | 2199999978 |
| 20 | 6534006534 |
| 21 | 6593465934 |
| 22 | 6599999934 |
[2178,6534,21978,65934,219978,659934,2199978, 6599934,21782178,21999978,65346534,65999934, 217802178,219999978,653406534,659999934, 2178002178,2197821978,2199999978,6534006534, 6593465934,6599999934] |