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 | 30 |
| 3 | 360 |
| 4 | 840 |
| 5 | 11088 |
| 6 | 18018 |
| 7 | 1713600 |
| 8 | 32760 |
| 9 | 327600 |
| 10 | 350064 |
| 11 | 39437798400 |
| 12 | 180180 |
| 13 | 8532905472000 |
| 14 | 47361600 |
| 15 | 720720 |
| 16 | 1750320 |