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) |
|---|---|
| 2 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 17 |
| 6 | 29 |
| 7 | 53 |
| 8 | 89 |
| 9 | 157 |
| 10 | 271 |
| 11 | 487 |
| 12 | 857 |
| 13 | 1487 |
| 14 | 2621 |
| 15 | 4567 |
| 16 | 8011 |
| 17 | 13999 |
| 18 | 24499 |
| 19 | 42901 |
| 20 | 75401 |
| 21 | 132169 |
| 22 | 231431 |
| 23 | 406207 |
| 24 | 711617 |
| 25 | 1247761 |
| 26 | 2186941 |