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 | 17 |
| 6 | 31 |
| 7 | 71 |
| 8 | 127 |
| 9 | 157 |
| 10 | 227 |
| 11 | 257 |
| 12 | 293 |
| 13 | 349 |
| 14 | 419 |
| 15 | 503 |
| 16 | 65657 |
| 17 | 152833 |
| 18 | 172297 |
| 19 | 11229341 |
| 20 | 12584983 |
| 21 | 26532901 |
| 22 | 31220807 |
| 23 | 1164893671 |
| 24 | 1217349652999 |
| 25 | 2346608054761 |
| 26 | 8116583338373 |
| 27 | 53091879496979 |
| 28 | 9758833144565411 |