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 | 5 |
| 2 | 7 |
| 3 | 13 |
| 4 | 19 |
| 5 | 31 |
| 6 | 43 |
| 7 | 89 |
| 8 | 101 |
| 9 | 229 |
| 10 | 293 |
| 11 | 457 |
| 12 | 541 |
| 13 | 653 |
| 14 | 659 |
| 15 | 1553 |
| 16 | 2003 |
| 17 | 2707 |
| 18 | 2749 |
| 19 | 7159 |
| 20 | 10289 |
| 21 | 26267 |
| 22 | 59581 |
| 23 | 63421 |
| 24 | 80911 |