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 | 1 |
| 2 | 32 |
| 3 | 1536 |
| 4 | 282624 |
| 5 | 66846720 |
| 6 | 27053752320 |
| 7 | 16104538275840 |
| 8 | 13681567224299520 |
| 9 | 15874223643851489280 |
| 10 | 24412997036693834956800 |
| 11 | 48514602066025722465484800 |
| 12 | 121994703799547846503012761600 |
| 13 | 381343447691461317926230740172800 |
| 14 | 1459468400650603118890910517244723200 |