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) |
|---|---|
| 3 | 602 |
| 4 | 12122 |
| 5 | 632148 |
| 6 | 101905622 |
| 7 | 15605704374 |
| 8 | 1300091574624 |
| 9 | 431094129471872 |