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 | 12 |
| 2 | 432 |
| 3 | 7776 |
| 4 | 103680 |
| 5 | 1166400 |
| 6 | 11757312 |
| 7 | 109734912 |
| 8 | 967458816 |
| 9 | 8162933760 |
| 10 | 66512793600 |
| 11 | 526781325312 |
| 12 | 4074936532992 |
| 13 | 30901602041856 |
| 14 | 230390642442240 |
| 15 | 1692665944473600 |
| 16 | 12277470317248512 |
| 17 | 88052482431516672 |