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 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 24 |
| 11 | 332 |
| 12 | 1676 |
| 13 | 121374 |
| 14 | 4975929 |
| 15 | 134116265 |
| 16 | 1086588775 |
| 17 | 3492159897 |
| 18 | 8652650287 |
| 19 | 8652650482 |