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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 297 |
| 4 | 24273 |
| 5 | 3976209 |
| 6 | 1145032281 |
| 7 | 530050022073 |
| 8 | 369626762653857 |
| 9 | 369614778179835681 |
| 10 | 509880429246329788329 |
| 11 | 940535818601273787325257 |
| 12 | 2261104378216803649437779313 |
| 13 | 6933711495845384616312688513329 |
| 14 | 26630255658298074277771723491847161 |