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 | 17 |
| 3 | 1177 |
| 4 | 210249 |
| 5 | 76961257 |
| 6 | 50203153993 |
| 7 | 53127675356625 |
| 8 | 85252003916011889 |
| 9 | 197131843368693693937 |
| 10 | 631233222450168374457057 |