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 | 1 |
| 3 | 7 |
| 4 | 11 |
| 5 | 89 |
| 6 | 163 |
| 7 | 1597 |
| 8 | 3317 |
| 9 | 37823 |
| 10 | 107413 |
| 11 | 1182887 |
| 12 | 4232341 |
| 13 | 49100059 |
| 14 | 184657283 |
| 15 | 2329965377 |
| 16 | 10114830259 |
| 17 | 138903895201 |
| 18 | 622143222539 |
| 19 | 9382665690241 |
| 20 | 44778520855589 |
| 21 | 686482057860331 |
| 22 | 3598441529151191 |