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 | 20 |
| 2 | 72 |
| 3 | 7968 |
| 4 | 114816 |
| 5 | 270336 |
| 6 | 2146566144 |
| 7 | 2305843004919250944 |
| 8 | 618970015031004121169657856 |
| 9 | 162258038889176383854312324857856 |
| 10 | 170140858942534543324603210697313091584 |