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 | 6 |
| 2 | 7 |
| 3 | 9 |
| 4 | 15 |
| 5 | 21 |
| 6 | 27 |
| 7 | 29 |
| 8 | 321 |
| 9 | 327 |
| 10 | 333 |
| 11 | 567 |
| 12 | 1025 |
| 13 | 4263 |
| 14 | 4365 |
| 15 | 5175 |
| 16 | 5655 |
| 17 | 9221 |
| 18 | 9327 |
| 19 | 9681 |
| 20 | 19685 |
| 21 | 24777 |
| 22 | 57869 |
| 23 | 58737 |