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 | 2 |
| 2 | 28 |
| 3 | 1368 |
| 4 | 1700 |
| 5 | 342000 |
| 6 | 2061000 |
| 7 | 2120832 |
| 8 | 65834560 |
| 9 | 89082000 |