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 | 84 |
| 3 | 480 |
| 4 | 32256 |
| 5 | 58254 |
| 6 | 61440 |
| 7 | 1556480 |
| 8 | 3932160 |
| 9 | 1505806848 |
| 10 | 107870873600 |
| 11 | 1098437885952 |