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 | 389999 |
| 2 | 399899 |
| 3 | 399989 |
| 4 | 489989 |
| 5 | 497999 |
| 6 | 498989 |
| 7 | 499979 |
| 8 | 578999 |
| 9 | 587999 |
| 10 | 589997 |
| 11 | 597899 |
| 12 | 598799 |
| 13 | 599699 |
| 14 | 659999 |
| 15 | 668999 |
| 16 | 669989 |
| 17 | 678989 |
| 18 | 688799 |
| 19 | 688889 |
| 20 | 688979 |
| 21 | 689699 |
| 22 | 689789 |
| 23 | 689879 |
| 24 | 689987 |
| 25 | 695999 |
| 26 | 696989 |
| 27 | 697979 |
| 28 | 769799 |
| 29 | 769997 |
| 30 | 777989 |