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 | 3 |
| 2 | 5 |
| 3 | 13 |
| 4 | 21 |
| 5 | 89 |
| 6 | 233 |
| 7 | 987 |
| 8 | 1597 |
| 9 | 4181 |
| 10 | 1346269 |
| 11 | 24157817 |
| 12 | 165580141 |
| 13 | 2971215073 |
| 14 | 53316291173 |
| 15 | 2504730781961 |
| 16 | 308061521170129 |
| 17 | 14472334024676221 |
| 18 | 184551825793033096366333 |