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 | 3 |
| 2 | 175 |
| 3 | 23611 |
| 4 | 5179791 |
| 5 | 1583828620 |
| 6 | 621893381187 |
| 7 | 298289430051783 |
| 8 | 169027530016448143 |
| 9 | 110485582196129404780 |
| 10 | 81829925127960010076736 |