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 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 13 |
| 7 | 22 |
| 8 | 36 |
| 9 | 57 |
| 10 | 89 |
| 11 | 142 |
| 12 | 224 |
| 13 | 354 |
| 14 | 562 |
| 15 | 893 |
| 16 | 1425 |
| 17 | 2276 |
| 18 | 3642 |
| 19 | 5838 |
| 20 | 9397 |
| 21 | 15154 |
| 22 | 24517 |
| 23 | 39757 |
| 24 | 64606 |
| 25 | 105249 |
| 26 | 171873 |
| 27 | 281236 |
| 28 | 461254 |
| 29 | 758039 |
| 30 | 1248269 |