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 | 0 |
| 2 | 125874 |
| 3 | 128574 |
| 4 | 142587 |
| 5 | 142857 |
| 6 | 258714 |
| 7 | 258741 |
| 8 | 285714 |
| 9 | 285741 |
| 10 | 412587 |
| 11 | 412857 |
| 12 | 425871 |
| 13 | 428571 |
| 14 | 1025874 |
| 15 | 1028574 |
| 16 | 1042587 |
| 17 | 1042857 |
| 18 | 1052874 |
| 19 | 1054287 |
| 20 | 1072854 |
| 21 | 1074285 |
| 22 | 1078524 |
| 23 | 1078542 |
| 24 | 1085274 |
| 25 | 1085427 |
| 26 | 1087254 |
| 27 | 1087425 |
| 28 | 1087524 |
| 29 | 1087542 |