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 | 11 |
| 2 | 16661 |
| 3 | 31513 |
| 4 | 74747 |
| 5 | 75557 |
| 6 | 1035301 |
| 7 | 1074701 |
| 8 | 1303031 |
| 9 | 1363631 |
| 10 | 1374731 |
| 11 | 1557551 |
| 12 | 1646461 |
| 13 | 1714171 |
| 14 | 1777771 |
| 15 | 1909091 |
| 16 | 3075703 |
| 17 | 3127213 |
| 18 | 3452543 |
| 19 | 3627263 |
| 20 | 3635363 |
| 21 | 3646463 |
| 22 | 3746473 |
| 23 | 3784873 |
| 24 | 3948493 |
| 25 | 3983893 |
| 26 | 7057507 |
| 27 | 7302037 |
| 28 | 7354537 |
| 29 | 7365637 |
| 30 | 7622267 |