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 | 554 |
| 2 | 3328 |
| 3 | 55553 |
| 4 | 77764 |
| 5 | 222221 |
| 6 | 444442 |
| 7 | 666663 |
| 8 | 888865 |
| 9 | 888884 |
| 10 | 5555552 |
| 11 | 6666595 |
| 12 | 9999840 |
| 13 | 33332680 |
| 14 | 55555526 |
| 15 | 66666557 |
| 16 | 99998670 |
| 17 | 333332176 |
| 18 | 333333312 |
| 19 | 555555551 |
| 20 | 666665752 |
| 21 | 666666624 |
| 22 | 999997536 |
| 23 | 999999936 |
| 24 | 9999976480 |
| 25 | 9999997844 |
| 26 | 9999999668 |
| 27 | 9999999923 |
| 28 | 11111111110 |