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) |
|---|---|
| 4 | 1 |
| 5 | 22 |
| 6 | 22 |
| 7 | 9831 |
| 8 | 314767045 |
| 9 | 1916060910 |
| 10 | 455075911977 |