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 | 3 |
| 3 | 8 |
| 4 | 61 |
| 5 | 800 |
| 6 | 38194 |
| 7 | 6254652 |
| 8 | 3666019207 |
| 9 | 7400038427299 |
| 10 | 51429702889968135 |
| 11 | 1241437835049586937641 |
| 12 | 105176323921573775380216377 |
| 13 | 31585284922954071317319026074538 |