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 | 2 |
| 2 | 23 |
| 3 | 251 |
| 4 | 347 |
| 5 | 5023 |
| 6 | 50227 |
| 7 | 64037 |
| 8 | 3924211 |
| 9 | 4952767 |
| 10 | 43275737 |
| 11 | 586635689 |
| 12 | 592856489 |
| 13 | 62527264517 |