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) |
|---|---|
| 3 | 945 |
| 4 | 3465 |
| 5 | 15015 |
| 6 | 692835 |
| 7 | 22309287 |
| 8 | 1542773001 |
| 9 | 33426748355 |
| 10 | 1635754104985 |
| 11 | 114761064312895 |
| 12 | 9316511857401385 |
| 13 | 879315530560980695 |
| 14 | 88452776289145528645 |
| 15 | 2792580508557308832935 |
| 16 | 428525983200229616718445 |
| 17 | 42163230434005200984080045 |
| 18 | 1357656019974967471687377449 |