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 | 24 |
| 7 | 30 |
| 8 | 52 |
| 9 | 64 |
| 10 | 66 |
| 11 | 68 |
| 12 | 100 |
| 13 | 108 |
| 14 | 112 |
| 15 | 144 |
| 16 | 158 |
| 17 | 160 |
| 18 | 162 |
| 19 | 182 |
| 20 | 194 |
| 21 | 218 |
| 22 | 226 |
| 23 | 228 |
| 24 | 230 |
| 25 | 244 |
| 26 | 264 |
| 27 | 266 |
| 28 | 288 |
| 29 | 290 |
| 30 | 312 |