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 | 6 |
| 2 | 571 |
| 3 | 56268 |
| 4 | 5614390 |
| 5 | 561232920 |
| 6 | 56120665334 |
| 7 | 5612026652893 |
| 8 | 561202243017532 |
| 9 | 56120219419339591 |