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 | 31 |
| 4 | 79 |
| 5 | 491 |
| 6 | 3019 |
| 7 | 3623 |
| 8 | 4175 |
| 9 | 9957 |
| 10 | 21963 |
| 11 | 71637 |
| 12 | 80551 |
| 13 | 80831 |