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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 11 |
| 6 | 13 |
| 7 | 29 |
| 8 | 43 |
| 9 | 83 |
| 10 | 239 |
| 11 | 463 |
| 12 | 911 |
| 13 | 1483 |
| 14 | 1721 |
| 15 | 3067 |
| 16 | 4187 |
| 17 | 10613 |
| 18 | 12433 |
| 19 | 15287 |
| 20 | 26447 |