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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 24 |
| 6 | 63 |
| 7 | 81 |
| 8 | 92 |
| 9 | 165 |
| 10 | 232 |
| 11 | 236 |
| 12 | 591 |
| 13 | 669 |
| 14 | 1343 |
| 15 | 2973 |
| 16 | 3630 |
| 17 | 5600 |
| 18 | 7019 |
| 19 | 17169 |
| 20 | 31945 |
| 21 | 52172 |