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 | 4 |
| 3 | 8 |
| 4 | 12 |
| 5 | 18 |
| 6 | 30 |
| 7 | 50 |
| 8 | 70 |
| 9 | 98 |
| 10 | 154 |
| 11 | 242 |
| 12 | 286 |
| 13 | 338 |
| 14 | 442 |
| 15 | 578 |
| 16 | 646 |
| 17 | 722 |
| 18 | 874 |
| 19 | 1058 |
| 20 | 1334 |
| 21 | 1682 |
| 22 | 1798 |
| 23 | 1922 |
| 24 | 2294 |
| 25 | 2738 |