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) |
|---|---|
| 3 | 1 |
| 4 | 85 |
| 5 | 5797 |
| 6 | 376805 |
| 7 | 24208613 |
| 8 | 1550842085 |
| 9 | 99277752549 |
| 10 | 6354157930725 |
| 11 | 406672215935205 |
| 12 | 26027119554103525 |
| 13 | 1665737215212030181 |
| 14 | 106607206793565997285 |
| 15 | 6822861635108183247077 |
| 16 | 436663151052043168024805 |
| 17 | 27946441769812674154891493 |