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 | 3 |
| 2 | 13 |
| 3 | 19 |
| 4 | 373 |
| 5 | 174877 |
| 6 | 135859 |
| 7 | 18235423 |
| 8 | 26588257 |
| 9 | 93112729 |
| 10 | 376038903103 |
| 11 | 7087694466289 |
| 12 | 120223669028389 |