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 | 3137 |
| 3 | 8389 |
| 4 | 157163 |
| 5 | 167173 |
| 6 | 233239 |
| 7 | 257263 |
| 8 | 331337 |
| 9 | 353359 |
| 10 | 467479 |
| 11 | 509521 |
| 12 | 523541 |
| 13 | 653659 |
| 14 | 661673 |
| 15 | 677683 |
| 16 | 727733 |
| 17 | 11871193 |
| 18 | 12011213 |
| 19 | 12591277 |
| 20 | 13671373 |
| 21 | 14531459 |
| 22 | 16691693 |
| 23 | 17091721 |
| 24 | 17411747 |
| 25 | 21792203 |
| 26 | 22072213 |
| 27 | 22812287 |