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) |
|---|---|
| 1 | 71831760 |
| 2 | 73513440 |
| 3 | 1675212000 |
| 4 | 6913932480 |
| 5 | 4323749790360 |
| 6 | 2678930100000 |
| 7 | 175434192299520 |
| 8 | 503151375767040 |