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 | 257 |
| 5 | 977 |
| 6 | 3257 |
| 7 | 5189 |
| 8 | 11717 |
| 9 | 13367 |
| 10 | 22937 |
| 11 | 65537 |
| 12 | 307397 |
| 13 | 491537 |
| 14 | 589409 |
| 15 | 983777 |
| 16 | 1659587 |
| 17 | 2822717 |
| 18 | 3137357 |
| 19 | 5577827 |
| 20 | 6475457 |
| 21 | 7378373 |
| 22 | 8698097 |
| 23 | 10798727 |
| 24 | 32235737 |
| 25 | 37797437 |
| 26 | 39220127 |
| 27 | 39285437 |
| 28 | 51555137 |
| 29 | 52077197 |
| 30 | 56992553 |
| 31 | 63767927 |
| 32 | 70075997 |