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 | 8 |
| 2 | 21 |
| 3 | 280 |
| 4 | 1680 |
| 5 | 38760 |
| 6 | 326040 |
| 7 | 10986360 |
| 8 | 185040240 |
| 9 | 4897368840 |
| 10 | 383246454360 |
| 11 | 13143876816840 |
| 12 | 376306806515640 |
| 13 | 27961718389364760 |
| 14 | 3250163645572822440 |
| 15 | 152582219844376633080 |
| 16 | 6202664616058189439160 |
| 17 | 1454199694916714984358120 |