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) |
|---|---|
| 2 | 41 |
| 3 | 265 |
| 4 | 1697 |
| 5 | 10897 |
| 6 | 69941 |
| 7 | 448945 |
| 8 | 2881697 |
| 9 | 18497137 |
| 10 | 118730021 |
| 11 | 762108145 |
| 12 | 4891844657 |
| 13 | 31399932337 |
| 14 | 201550911701 |
| 15 | 1293721577905 |
| 16 | 8304182337857 |
| 17 | 53303156937457 |
| 18 | 342144045482501 |
| 19 | 2196165379031665 |
| 20 | 14096818096762577 |
| 21 | 90485116626705457 |
| 22 | 580808823292457141 |