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 | 450 |
| 2 | 134028 |
| 3 | 21876416 |
| 4 | 3019386508 |
| 5 | 469723808009 |
| 6 | 74221751084228 |
| 7 | 11527528524302048 |
| 8 | 1793121938656927984 |