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 | 30 |
| 2 | 420 |
| 3 | 4620 |
| 4 | 9240 |
| 5 | 12600 |
| 6 | 13860 |
| 7 | 18480 |
| 8 | 138600 |
| 9 | 360360 |
| 10 | 1801800 |
| 11 | 5405400 |
| 12 | 6126120 |
| 13 | 12252240 |
| 14 | 18378360 |
| 15 | 24504480 |
| 16 | 30630600 |
| 17 | 49008960 |
| 18 | 91891800 |
| 19 | 232792560 |
| 20 | 349188840 |
| 21 | 465585120 |
| 22 | 931170240 |
| 23 | 1163962800 |
| 24 | 1745944200 |