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 | 9 |
| 6 | 13 |
| 7 | 21 |
| 8 | 25 |
| 9 | 37 |
| 10 | 45 |
| 11 | 57 |
| 12 | 81 |
| 13 | 133 |
| 14 | 157 |
| 15 | 193 |
| 16 | 225 |
| 17 | 253 |
| 18 | 273 |
| 19 | 325 |
| 20 | 477 |
| 21 | 613 |
| 22 | 1821 |