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) |
|---|---|
| 21 | 2 |
| 22 | 4 |
| 23 | 2 |
| 24 | 8 |
| 25 | 16 |
| 26 | 20 |
| 27 | 48 |
| 28 | 48 |
| 29 | 69 |
| 30 | 74 |
| 31 | 107 |
| 32 | 158 |
| 33 | 177 |
| 34 | 270 |
| 35 | 355 |
| 36 | 519 |
| 37 | 716 |