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 | 7 |
| 5 | 13 |
| 6 | 23 |
| 7 | 113 |
| 8 | 1327 |
| 9 | 31397 |
| 10 | 370261 |
| 11 | 2010733 |
| 12 | 20831323 |
| 13 | 25056082087 |