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 | 257 |
| 3 | 193 |
| 4 | 65537 |
| 5 | 11489 |
| 6 | 98801 |
| 7 | 169553 |
| 8 | 673 |
| 9 | 21523361 |
| 10 | 5882353 |
| 11 | 6304673 |
| 12 | 260753 |
| 13 | 407865361 |
| 14 | 16097 |
| 15 | 179953 |
| 16 | 6700417 |
| 17 | 184417 |
| 18 | 113607841 |
| 19 | 563377 |
| 20 | 1505882353 |
| 21 | 300673 |
| 22 | 3227992561 |
| 23 | 623009 |
| 24 | 2311681 |
| 25 | 29423041 |
| 26 | 57734881 |
| 27 | 769 |
| 28 | 22223646961 |
| 29 | 561377 |
| 30 | 4855073 |