This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 599999 |
| 2 | 788999 |
| 3 | 799979 |
| 4 | 888989 |
| 5 | 889997 |
| 6 | 897899 |
| 7 | 898889 |
| 8 | 969989 |
| 9 | 979889 |
| 10 | 988979 |
| 11 | 996899 |
| 12 | 997889 |
| 13 | 998897 |
| 14 | 998969 |
| 15 | 999599 |
| 16 | 999959 |
| 17 | 1598999 |
| 18 | 1699799 |
| 19 | 1789979 |
| 20 | 1798997 |
| 21 | 1799969 |
| 22 | 1859999 |
| 23 | 1886999 |
| 24 | 1888979 |
| 25 | 1889969 |
| 26 | 1896899 |
| 27 | 1896989 |
| 28 | 1897979 |
| 29 | 1899797 |