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) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 25 |
| 4 | 254 |
| 5 | 3835 |
| 6 | 80789 |
| 7 | 2265927 |
| 8 | 81654161 |
| 9 | 3676703172 |
| 10 | 202300328621 |
| 11 | 13355498392158 |
| 12 | 1041931174916945 |
| 13 | 94829092415834153 |
| 14 | 9958096634837503010 |
| 15 | 1195066425272916195353 |
| 16 | 162538991933751440071018 |
| 17 | 24869660832289243247061107 |