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 | 1 |
| 2 | 43 |
| 3 | 824747 |
| 4 | 3171671 |
| 5 | 767335408183 |
| 6 | 921649796621 |
| 7 | 1367268373487 |
| 8 | 8978321374181 |
| 9 | 35467651791527 |
| 10 | 177538435814203 |