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 | 271 |
| 2 | 281 |
| 3 | 21491 |
| 4 | 21991 |
| 5 | 22091 |
| 6 | 22481 |
| 7 | 23081 |
| 8 | 23971 |
| 9 | 24071 |
| 10 | 25951 |
| 11 | 26681 |
| 12 | 26981 |
| 13 | 27271 |
| 14 | 27431 |
| 15 | 27691 |
| 16 | 27791 |
| 17 | 28031 |
| 18 | 28661 |
| 19 | 28921 |
| 20 | 28961 |
| 21 | 29021 |
| 22 | 29191 |
| 23 | 29251 |
| 24 | 29411 |
| 25 | 29671 |
| 26 | 2129891 |
| 27 | 2131991 |
| 28 | 2141791 |
| 29 | 2141891 |
| 30 | 2151791 |
| 31 | 2157091 |
| 32 | 2161591 |
| 33 | 2179391 |
| 34 | 2191291 |