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 | 14 |
| 3 | 98 |
| 4 | 954 |
| 5 | 12242 |
| 6 | 199156 |
| 7 | 3988248 |
| 8 | 96094356 |
| 9 | 2735515916 |
| 10 | 90647239704 |
| 11 | 3453539346232 |
| 12 | 149695821098056 |
| 13 | 7316061672718152 |
| 14 | 400012182207670288 |
| 15 | 24301065118906010048 |
| 16 | 1630456684740565109904 |
| 17 | 120168318315515773499952 |