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 | 25 |
| 2 | 35 |
| 3 | 57 |
| 4 | 235 |
| 5 | 237 |
| 6 | 253 |
| 7 | 327 |
| 8 | 527 |
| 9 | 537 |
| 10 | 573 |
| 11 | 723 |
| 12 | 753 |
| 13 | 2537 |
| 14 | 2573 |
| 15 | 2735 |
| 16 | 5327 |
| 17 | 5723 |
| 18 | 7235 |