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 | 6 |
| 2 | 60 |
| 3 | 1080 |
| 4 | 36720 |
| 5 | 2423520 |
| 6 | 315057600 |
| 7 | 81284860800 |
| 8 | 41780418451200 |
| 9 | 42866709330931200 |
| 10 | 87876754128408960000 |
| 11 | 360118938418219918080000 |
| 12 | 2950814581398894008747520000 |
| 13 | 48352047730802277227336862720000 |
| 14 | 1584496604138390624739828991334400000 |