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 | 1 |
| 4 | 49 |
| 5 | 2401 |
| 6 | 113060689 |
| 7 | 260871824431729 |
| 8 | 9708455965188246321478801 |
| 9 | 361304320362377236050632364626862769 |
| 10 | 3511057522394397982450601057907077808699210592028881 |