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 | 3 |
| 2 | 11 |
| 3 | 37 |
| 4 | 163 |
| 5 | 173 |
| 6 | 241 |
| 7 | 571 |
| 8 | 1231 |
| 9 | 1571 |
| 10 | 2351 |
| 11 | 3571 |
| 12 | 25463 |
| 13 | 69247 |