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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 12 |
| 7 | 17 |
| 8 | 28 |
| 9 | 43 |
| 10 | 70 |
| 11 | 111 |
| 12 | 184 |
| 13 | 303 |
| 14 | 510 |
| 15 | 865 |
| 16 | 1482 |
| 17 | 2573 |
| 18 | 4480 |
| 19 | 7915 |
| 20 | 14008 |