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 | 5 |
| 3 | 31 |
| 4 | 277 |
| 5 | 5381 |
| 6 | 87803 |
| 7 | 2269733 |
| 8 | 50728129 |
| 9 | 1559861749 |
| 10 | 64988430769 |
| 11 | 2428095424619 |
| 12 | 119543903707171 |
| 13 | 5519908106212193 |
| 14 | 248761474969923757 |