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 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 11 |
| 5 | 37 |
| 6 | 41 |
| 7 | 43 |
| 8 | 83 |
| 9 | 269 |
| 10 | 577 |
| 11 | 1429 |
| 12 | 1433 |
| 13 | 2063 |
| 14 | 2549 |
| 15 | 8353 |
| 16 | 10639 |
| 17 | 15299 |
| 18 | 16927 |
| 19 | 18637 |
| 20 | 20201 |
| 21 | 24007 |
| 22 | 30097 |
| 23 | 34039 |
| 24 | 41777 |
| 25 | 146609 |
| 26 | 394249 |
| 27 | 839203 |
| 28 | 2955319 |