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 | 11 |
| 2 | 13 |
| 3 | 5 |
| 4 | 17041 |
| 5 | 24481 |
| 6 | 12338881 |
| 7 | 1065601 |
| 8 | 1985902081 |
| 9 | 219416417281 |
| 10 | 105230562877441 |
| 11 | 1422461638625281 |
| 12 | 444124661486837761 |
| 13 | 3105111850422067201 |