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 | 1 |
| 3 | 3 |
| 4 | 27 |
| 5 | 3645 |
| 6 | 61509375 |
| 7 | 4204742431640625 |
| 8 | 2396825584582984447479248046875 |
| 9 | 3896237517467890187050354408614984136338676989907980896532535552978515625 |