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 | 6 |
| 4 | 12 |
| 5 | 18 |
| 6 | 20 |
| 7 | 24 |
| 8 | 28 |
| 9 | 40 |
| 10 | 48 |
| 11 | 60 |
| 12 | 84 |
| 13 | 90 |
| 14 | 120 |
| 15 | 126 |
| 16 | 132 |
| 17 | 140 |
| 18 | 150 |
| 19 | 156 |
| 20 | 168 |
| 21 | 180 |
| 22 | 198 |
| 23 | 204 |
| 24 | 220 |
| 25 | 228 |
| 26 | 234 |
| 27 | 240 |
| 28 | 252 |
| 29 | 260 |
| 30 | 264 |
| 31 | 270 |
| 32 | 276 |
| 33 | 280 |