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 | 6 |
| 3 | 68 |
| 4 | 1632 |
| 5 | 84948 |
| 6 | 8960464 |
| 7 | 1980677448 |
| 8 | 905233056800 |
| 9 | 860544738080372 |
| 10 | 1705630286322728068 |