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 | 13 |
| 3 | 91 |
| 4 | 241573 |
| 5 | 38152387 |
| 6 | 139415801707 |
| 7 | 55342019130181 |
| 8 | 61166380109329 |
| 9 | 417542026135897 |
| 10 | 417542026135897 |
| 11 | 13805828672331787 |