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 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 7 |
| 5 | 17 |
| 6 | 41 |
| 7 | 37 |
| 8 | 83 |
| 9 | 79 |
| 10 | 109 |
| 11 | 241 |
| 12 | 239 |
| 13 | 499 |
| 14 | 491 |
| 15 | 1117 |
| 16 | 1109 |
| 17 | 2539 |
| 18 | 2531 |
| 19 | 5623 |
| 20 | 5591 |
| 21 | 11471 |
| 22 | 11467 |
| 23 | 23369 |
| 24 | 23357 |