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 | 2 |
| 2 | 12 |
| 3 | 48 |
| 4 | 4032 |
| 5 | 61440 |
| 6 | 196608 |
| 7 | 1073479680 |
| 8 | 1152921503533105152 |
| 9 | 309485008668423564117934080 |
| 10 | 81129328929596860350720280363008 |
| 11 | 85070510600596201259161956068936908800 |