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 | 598999 |
| 2 | 599899 |
| 3 | 679999 |
| 4 | 688999 |
| 5 | 697999 |
| 6 | 698899 |
| 7 | 769999 |
| 8 | 779899 |
| 9 | 787999 |
| 10 | 789979 |
| 11 | 798799 |
| 12 | 799789 |
| 13 | 868999 |
| 14 | 869899 |
| 15 | 869989 |
| 16 | 878989 |
| 17 | 879799 |
| 18 | 879979 |
| 19 | 886999 |
| 20 | 887989 |
| 21 | 888799 |
| 22 | 888997 |
| 23 | 889699 |
| 24 | 889879 |
| 25 | 898897 |
| 26 | 898987 |
| 27 | 899779 |
| 28 | 967999 |
| 29 | 969889 |
| 30 | 978799 |