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 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 9 |
| 6 | 17 |
| 7 | 32 |
| 8 | 58 |
| 9 | 112 |
| 10 | 201 |
| 11 | 371 |
| 12 | 694 |
| 13 | 1276 |
| 14 | 2342 |
| 15 | 4330 |
| 16 | 7958 |
| 17 | 14613 |
| 18 | 26866 |
| 19 | 49303 |
| 20 | 90369 |
| 21 | 165646 |
| 22 | 303342 |
| 23 | 555056 |
| 24 | 1015069 |
| 25 | 1855230 |