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 | 199999 |
| 2 | 289999 |
| 3 | 298999 |
| 4 | 379999 |
| 5 | 389989 |
| 6 | 398989 |
| 7 | 399979 |
| 8 | 478999 |
| 9 | 489799 |
| 10 | 496999 |
| 11 | 497899 |
| 12 | 497989 |
| 13 | 499879 |
| 14 | 499897 |
| 15 | 499969 |
| 16 | 568999 |
| 17 | 587989 |
| 18 | 596899 |
| 19 | 597889 |
| 20 | 597997 |
| 21 | 598789 |
| 22 | 598987 |
| 23 | 599779 |
| 24 | 599869 |
| 25 | 599959 |
| 26 | 659899 |
| 27 | 667999 |
| 28 | 668989 |
| 29 | 679699 |
| 30 | 679879 |