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) |
|---|---|
| 0 | 2 |
| 1 | 23 |
| 2 | 419 |
| 3 | 5519 |
| 4 | 65687 |
| 5 | 733561 |
| 6 | 7867547 |
| 7 | 82064027 |
| 8 | 839001721 |
| 9 | 8448283757 |
| 10 | 84064182061 |
| 11 | 828513359549 |
| 12 | 8101615860589 |
| 13 | 78701296245541 |
| 14 | 760254097357847 |
| 15 | 7308703331126371 |
| 16 | 69967771422585271 |
| 17 | 667349537482051157 |
| 18 | 6344383023407982563 |