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 | 13 |
| 5 | 19 |
| 6 | 37 |
| 7 | 59 |
| 8 | 67 |
| 9 | 79 |
| 10 | 307 |
| 11 | 331 |
| 12 | 599 |
| 13 | 1301 |
| 14 | 12263 |
| 15 | 12589 |
| 16 | 18443 |
| 17 | 20149 |
| 18 | 27983 |
| 19 | 281807 |
| 20 | 656657 |
| 21 | 795829 |
| 22 | 832151 |