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 | 17 |
| 3 | 23 |
| 4 | 37 |
| 5 | 67 |
| 6 | 89 |
| 7 | 193 |
| 8 | 227 |
| 9 | 257 |
| 10 | 593 |
| 11 | 641 |
| 12 | 769 |
| 13 | 1889 |
| 14 | 10331 |
| 15 | 12289 |
| 16 | 13441 |
| 17 | 18433 |
| 18 | 40961 |
| 19 | 65537 |
| 20 | 85121 |
| 21 | 96769 |
| 22 | 2752513 |
| 23 | 3655681 |