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) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 25 |
| 5 | 121 |
| 6 | 241 |
| 7 | 1681 |
| 8 | 13441 |
| 9 | 40321 |
| 10 | 403201 |
| 11 | 2016001 |
| 12 | 3225601 |
| 13 | 41932801 |
| 14 | 609638401 |