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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 12 |
| 6 | 21 |
| 7 | 38 |
| 8 | 107 |
| 9 | 212 |
| 10 | 31488 |
| 11 | 70107 |
| 12 | 387288 |
| 13 | 95610729 |
| 14 | 446653271 |
| 15 | 3148717107 |
| 16 | 21081079479 |
| 17 | 648070211589107021 |