| n | a(n) |
|---|---|
| 1 | 281 |
| 2 | 887 |
| 3 | 8887 |
| 4 | 48883 |
| 5 | 888887 |
| 6 | 888888887 |
| 7 | 48888888883 |
| 8 | 888888888887 |
| 9 | 2888888888881 |
| 10 | 4888888888883 |
| 11 | 48888888888883 |
| 12 | 2888888888888888888888888881 |
| 13 | 48888888888888888888888888888888888888883 |
[281,887,8887,48883,888887,888888887,48888888883, 888888888887,2888888888881,4888888888883, 48888888888883,2888888888888888888888888881, 48888888888888888888888888888888888888883] |