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 | 4 |
| 3 | 25 |
| 4 | 5896 |
| 5 | 905327 |
| 6 | 3514396333 |
| 7 | 12336109217951 |
| 8 | 635264284970617848 |
| 9 | 46214926085757662096414 |