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 | 1 |
| 1 | 3 |
| 2 | 24 |
| 3 | 293 |
| 4 | 4784 |
| 5 | 97687 |
| 6 | 2393472 |
| 7 | 68405073 |
| 8 | 2233928448 |
| 9 | 82063263371 |
| 10 | 3349249267712 |
| 11 | 150353137462717 |
| 12 | 7362889615257600 |
| 13 | 390601858379350815 |
| 14 | 22315011551291080704 |
| 15 | 1365896953310909493929 |
| 16 | 89179296762081886011392 |
| 17 | 6186383336743041502051219 |