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 | 4 |
| 2 | 24 |
| 3 | 96 |
| 4 | 8064 |
| 5 | 122880 |
| 6 | 393216 |
| 7 | 2146959360 |
| 8 | 2305843007066210304 |
| 9 | 618970017336847128235868160 |
| 10 | 162258657859193720701440560726016 |
| 11 | 170141021201192402518323912137873817600 |