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 | 2 |
| 2 | 5 |
| 3 | 7 |
| 4 | 11 |
| 5 | 17 |
| 6 | 41 |
| 7 | 47 |
| 8 | 71 |
| 9 | 107 |
| 10 | 167 |
| 11 | 179 |
| 12 | 197 |
| 13 | 449 |
| 14 | 859 |
| 15 | 1019 |
| 16 | 1061 |
| 17 | 1499 |
| 18 | 2089 |
| 19 | 16901 |
| 20 | 47717 |
| 21 | 56269 |
| 22 | 86269 |
| 23 | 11917049 |