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 | 4 |
| 2 | 10 |
| 3 | 12 |
| 4 | 16 |
| 5 | 36 |
| 6 | 48 |
| 7 | 144 |
| 8 | 240 |
| 9 | 576 |
| 10 | 720 |
| 11 | 1440 |
| 12 | 2880 |
| 13 | 4320 |
| 14 | 10080 |
| 15 | 14400 |
| 16 | 17280 |
| 17 | 30240 |
| 18 | 80640 |
| 19 | 86400 |