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 | 2 |
| 2 | 6 |
| 3 | 14 |
| 4 | 330 |
| 5 | 10166 |
| 6 | 12075690 |
| 7 | 1174153011328084322 |
| 8 | 73582975079922326904310062621361286633125176265747127754 |