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 | 3 |
| 2 | 5 |
| 3 | 17 |
| 4 | 97 |
| 5 | 641 |
| 6 | 257 |
| 7 | 193 |
| 8 | 274177 |
| 9 | 65537 |
| 10 | 449 |
| 11 | 59649589127497217 |
| 12 | 769 |
| 13 | 1238926361552897 |
| 14 | 5441 |
| 15 | 5953 |
| 16 | 2424833 |
| 17 | 7873 |
| 18 | 2753 |
| 19 | 3329 |
| 20 | 10753 |
| 21 | 45592577 |
| 22 | 18433 |
| 23 | 4673 |
| 24 | 15937 |
| 25 | 444929 |
| 26 | 11777 |
| 27 | 12161 |
| 28 | 21698561 |
| 29 | 6977 |