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 | 5 |
| 2 | 92 |
| 3 | 2859 |
| 4 | 124832 |
| 5 | 7018105 |
| 6 | 482598720 |
| 7 | 39236322839 |
| 8 | 3681751480832 |
| 9 | 391611920476653 |
| 10 | 46560370087846400 |
| 11 | 6119025385880816035 |
| 12 | 880818377346674454528 |
| 13 | 137824220501484017301281 |
| 14 | 23291983597732334528110592 |
| 15 | 4228010378355969165140319375 |