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 | 13 |
| 2 | 11 |
| 3 | 1145 |
| 4 | 121 |
| 5 | 31109 |
| 6 | 1510081 |
| 7 | 34110497 |
| 8 | 5343853441 |
| 9 | 17636269729 |