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 | 3 |
| 3 | 5 |
| 4 | 13 |
| 5 | 34 |
| 6 | 377 |
| 7 | 1597 |
| 8 | 10946 |
| 9 | 75025 |
| 10 | 121393 |
| 11 | 17167680177565 |
| 12 | 135301852344706746049 |
| 13 | 1672445759041379840132227567949787325 |
| 14 | 3691087032412706639440686994833808526209 |