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 | 61 |
| 7 | 71 |
| 8 | 79 |
| 9 | 157 |
| 10 | 281 |
| 11 | 563 |
| 12 | 1277 |
| 13 | 1777 |
| 14 | 2339 |
| 15 | 6311 |
| 16 | 8233 |
| 17 | 8543 |
| 18 | 11047 |
| 19 | 22907 |
| 20 | 27689 |