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 | 13 |
| 6 | 29 |
| 7 | 31 |
| 8 | 37 |
| 9 | 47 |
| 10 | 59 |
| 11 | 109 |
| 12 | 223 |
| 13 | 307 |
| 14 | 389 |
| 15 | 457 |
| 16 | 1117 |
| 17 | 1151 |
| 18 | 2273 |
| 19 | 9137 |
| 20 | 10753 |
| 21 | 15727 |
| 22 | 25219 |
| 23 | 26459 |
| 24 | 29251 |
| 25 | 30259 |
| 26 | 52901 |
| 27 | 194471 |