The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 8 |
| 5 | 44 |
| 6 | 444 |
| 7 | 888 |
| 8 | 2222 |
| 9 | 8888 |
| 10 | 444444 |
| 11 | 888888 |
| 12 | 444444444 |
| 13 | 888888888 |
| 14 | 444444444444 |
| 15 | 888888888888 |
| 16 | 222222222222222222 |
| 17 | 444444444444444444444444444444 |
| 18 | 44444444444444444444444444444444 |
[3,4,6,8,44,444,888,2222,8888,444444,888888, 444444444,888888888,444444444444,888888888888, 222222222222222222,444444444444444444444444444444, 44444444444444444444444444444444] |