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 | 6 |
| 5 | 10 |
| 6 | 20 |
| 7 | 35 |
| 8 | 74 |
| 9 | 130 |
| 10 | 258 |
| 11 | 473 |
| 12 | 1007 |
| 13 | 1830 |
| 14 | 3912 |
| 15 | 7093 |
| 16 | 15233 |
| 17 | 27831 |
| 18 | 60458 |
| 19 | 109555 |
| 20 | 239039 |
| 21 | 433654 |
| 22 | 946849 |
| 23 | 1709524 |
| 24 | 3746021 |
| 25 | 6750928 |