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) |
|---|---|
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 81 |
| 6 | 44 |
| 7 | 1300 |
| 8 | 3375 |
| 9 | 20825 |
| 10 | 14896 |
| 11 | 1333584 |
| 12 | 1014300 |
| 13 | 133402500 |
| 14 | 105850800 |
| 15 | 85395024 |
| 16 | 279558279 |
| 17 | 66958716825 |
| 18 | 56112056000 |
| 19 | 17143034708800 |
| 20 | 14636445039216 |
| 21 | 12595733648784 |
| 22 | 10917487339200 |
| 23 | 5038547354568000 |