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 | 3 |
| 2 | 49 |
| 3 | 2028 |
| 4 | 159201 |
| 5 | 20342448 |
| 6 | 3850078401 |
| 7 | 1012487793408 |
| 8 | 353293863908769 |
| 9 | 157973407966483200 |
| 10 | 88087149666575064369 |
| 11 | 59928191584204259377152 |
| 12 | 48860028872008706126041281 |