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 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 15 |
| 6 | 42 |
| 7 | 49 |
| 8 | 56 |
| 9 | 63 |
| 10 | 106 |
| 11 | 170 |
| 12 | 182 |
| 13 | 246 |
| 14 | 255 |
| 15 | 507 |
| 16 | 627 |
| 17 | 848 |
| 18 | 864 |
| 19 | 961 |
| 20 | 1302 |
| 21 | 3209 |
| 22 | 4994 |
| 23 | 7665 |
| 24 | 7671 |
| 25 | 16405 |