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 | 18 |
| 4 | 10 |
| 5 | 924 |
| 6 | 5266 |
| 7 | 404761 |
| 8 | 26036557 |
| 9 | 4110999261 |
| 10 | 1386699669527 |