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 | 3 |
| 2 | 12 |
| 3 | 77 |
| 4 | 844 |
| 5 | 16503 |
| 6 | 596757 |
| 7 | 41033117 |
| 8 | 5471368440 |
| 9 | 1432942743191 |
| 10 | 742891339452074 |
| 11 | 765893172924289663 |
| 12 | 1574276565645571886030 |
| 13 | 6460810953532544267178464 |
| 14 | 52981833038613459613837968552 |
| 15 | 868530969442198171202817506636805 |
| 16 | 28468271824875045922269120666135968846 |