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 | 142857 |
| 2 | 285714 |
| 3 | 1402857 |
| 4 | 1428570 |
| 5 | 1428597 |
| 6 | 1429857 |
| 7 | 2857014 |
| 8 | 2857140 |
| 9 | 2859714 |
| 10 | 2985714 |
| 11 | 14002857 |
| 12 | 14028570 |
| 13 | 14028597 |
| 14 | 14029857 |
| 15 | 14285700 |
| 16 | 14285970 |
| 17 | 14285997 |
| 18 | 14298570 |
| 19 | 14298597 |
| 20 | 14299857 |
| 21 | 15623784 |
| 22 | 15843762 |
| 23 | 17438256 |
| 24 | 17562438 |
| 25 | 18243756 |
| 26 | 21584376 |
| 27 | 23784156 |
| 28 | 24375618 |
| 29 | 24381756 |