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 | 24 |
| 3 | 1560 |
| 4 | 119580 |
| 5 | 10166403 |
| 6 | 915103765 |
| 7 | 85747377755 |
| 8 | 8274075616387 |
| 9 | 816630819554486 |
| 10 | 82052796578652749 |