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 | 29 |
| 3 | 173 |
| 4 | 709 |
| 5 | 1741 |
| 6 | 8297 |
| 7 | 8297 |
| 8 | 19213 |
| 9 | 175229 |
| 10 | 175229 |
| 11 | 33952609 |
| 12 | 4377722623 |
| 13 | 4377722623 |
| 14 | 1242030992173 |
| 15 | 1242030992173 |