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 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 30 |
| 12 | 13 |
| 13 | 224 |
| 14 | 49 |
| 15 | 2000 |
| 16 | 233 |
| 17 | 18098 |
| 18 | 1439 |
| 19 | 209069 |
| 20 | 14021 |
| 21 | 3920160 |
| 22 | 187331 |
| 23 | 110361488 |
| 24 | 3462054 |