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 | 23 |
| 2 | 47 |
| 3 | 59 |
| 4 | 83 |
| 5 | 167 |
| 6 | 839 |
| 7 | 2099 |
| 8 | 5879 |
| 9 | 6719 |
| 10 | 23099 |
| 11 | 27299 |
| 12 | 180179 |
| 13 | 414959 |
| 14 | 420419 |
| 15 | 628319 |
| 16 | 660659 |
| 17 | 840839 |
| 18 | 1141139 |
| 19 | 1681679 |
| 20 | 2042039 |
| 21 | 2277659 |
| 22 | 4084079 |
| 23 | 5525519 |
| 24 | 5705699 |