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 | 8 |
| 3 | 97 |
| 4 | 1778 |
| 5 | 43747 |
| 6 | 1349703 |
| 7 | 50033463 |
| 8 | 2164920950 |
| 9 | 107074391802 |
| 10 | 5957871478583 |
| 11 | 368330684797595 |
| 12 | 25046735249606820 |
| 13 | 1857906353180702199 |
| 14 | 149289720057575358424 |
| 15 | 12917953683720554797237 |
| 16 | 1197556745092101849164899 |
| 17 | 118414507831659267311128558 |