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 | 5711 |
| 2 | 111317 |
| 3 | 171923 |
| 4 | 313741 |
| 5 | 414347 |
| 6 | 8997101 |
| 7 | 229233239 |
| 8 | 239241251 |
| 9 | 263269271 |
| 10 | 307311313 |
| 11 | 313317331 |
| 12 | 317331337 |
| 13 | 353359367 |
| 14 | 359367373 |
| 15 | 383389397 |
| 16 | 389397401 |
| 17 | 401409419 |
| 18 | 409419421 |
| 19 | 439443449 |
| 20 | 449457461 |