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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 5 |
| 9 | 8 |
| 10 | 14 |
| 11 | 23 |
| 12 | 42 |
| 13 | 73 |
| 14 | 133 |
| 15 | 241 |
| 16 | 442 |
| 17 | 812 |
| 18 | 1508 |
| 19 | 2802 |
| 20 | 5247 |
| 21 | 9842 |
| 22 | 18554 |
| 23 | 35045 |
| 24 | 66453 |
| 25 | 126249 |