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 | 60 |
| 2 | 168 |
| 3 | 360 |
| 4 | 2520 |
| 5 | 5616 |
| 6 | 6048 |
| 7 | 7920 |
| 8 | 20160 |
| 9 | 20160 |
| 10 | 25920 |
| 11 | 29120 |
| 12 | 62400 |
| 13 | 95040 |
| 14 | 126000 |
| 15 | 175560 |
| 16 | 181440 |
| 17 | 372000 |
| 18 | 443520 |
| 19 | 604800 |
| 20 | 979200 |
| 21 | 1451520 |
| 22 | 1814400 |
| 23 | 1876896 |
| 24 | 3265920 |
| 25 | 4245696 |
| 26 | 4680000 |
| 27 | 5515776 |
| 28 | 5663616 |
| 29 | 6065280 |
| 30 | 9999360 |