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 | 3 |
| 3 | 5 |
| 4 | 13 |
| 5 | 41 |
| 6 | 191 |
| 7 | 1693 |
| 8 | 77521 |
| 9 | 6123133 |
| 10 | 19993321 |
| 11 | 65877982561 |
| 12 | 45970265603856656467133467254989217935871992827865240416294386431 |