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 | 8 |
| 2 | 9 |
| 3 | 88 |
| 4 | 89 |
| 5 | 98 |
| 6 | 99 |
| 7 | 888 |
| 8 | 889 |
| 9 | 898 |
| 10 | 899 |
| 11 | 988 |
| 12 | 989 |
| 13 | 998 |
| 14 | 999 |
| 15 | 8888 |
| 16 | 8889 |
| 17 | 8898 |
| 18 | 8899 |
| 19 | 8988 |
| 20 | 8989 |
| 21 | 8998 |
| 22 | 8999 |
| 23 | 9888 |
| 24 | 9889 |
| 25 | 9898 |
| 26 | 9899 |
| 27 | 9988 |
| 28 | 9989 |
| 29 | 9998 |
| 30 | 9999 |
| 31 | 88888 |
| 32 | 88889 |
| 33 | 88898 |
| 34 | 88899 |
| 35 | 88988 |
| 36 | 88989 |
| 37 | 88998 |
| 38 | 88999 |
| 39 | 89888 |
| 40 | 89889 |