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 | 12 |
| 3 | 216 |
| 4 | 5184 |
| 5 | 155520 |
| 6 | 5598720 |
| 7 | 235146240 |
| 8 | 11287019520 |
| 9 | 609499054080 |
| 10 | 36569943244800 |
| 11 | 2413616254156800 |
| 12 | 173780370299289600 |
| 13 | 13554868883344588800 |
| 14 | 1138608986200945459200 |
| 15 | 102474808758085091328000 |
| 16 | 9837581640776168767488000 |
| 17 | 1003433327359169214283776000 |