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) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 350 |
| 3 | 349125 |
| 4 | 6541895625 |
| 5 | 2507423437503750 |
| 6 | 20269247819848681671875 |
| 7 | 3527360416889444660042550312500 |
| 8 | 13447858828542523681813067677875519531250 |