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 | 24 |
| 2 | 576 |
| 3 | 9504 |
| 4 | 176002 |
| 5 | 3283906 |
| 6 | 60714322 |
| 7 | 1127318294 |
| 8 | 20939826298 |
| 9 | 388867222760 |
| 10 | 7222456829200 |
| 11 | 134147557893368 |
| 12 | 2491616383146400 |
| 13 | 46278849344155436 |
| 14 | 859576817744096818 |
| 15 | 15965664732975667282 |
| 16 | 296544220226026744002 |