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 | 1 |
| 2 | 17 |
| 3 | 4097 |
| 4 | 7361 |
| 5 | 85073 |
| 6 | 658529 |
| 7 | 3999137 |
| 8 | 72281281 |
| 9 | 285143057 |
| 10 | 628944689 |
| 11 | 854112113 |
| 12 | 1423081169 |
| 13 | 2561019281 |
| 14 | 3111576929 |
| 15 | 4298117633 |
| 16 | 5921265041 |
| 17 | 14224884929 |
| 18 | 21336998129 |
| 19 | 34317377233 |
| 20 | 50723421713 |
| 21 | 63797137889 |
| 22 | 144269032049 |
| 23 | 163834314353 |
| 24 | 187397322209 |
| 25 | 212565453281 |