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 | 4 |
| 3 | 7 |
| 4 | 11 |
| 5 | 16 |
| 6 | 22 |
| 7 | 9 |
| 8 | 17 |
| 9 | 289 |
| 10 | 1873 |
| 11 | 11553 |
| 12 | 63553 |
| 13 | 4573699 |
| 14 | 14073021495 |
| 15 | 65713427547321843 |
| 16 | 57325015297059875497553701478 |