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 | 2 |
| 2 | 65 |
| 3 | 561 |
| 4 | 41041 |
| 5 | 825265 |
| 6 | 321197185 |
| 7 | 5394826801 |
| 8 | 232250619601 |
| 9 | 9746347772161 |