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 | 144 |
| 2 | 144 |
| 3 | 288 |
| 4 | 360 |
| 5 | 360 |
| 6 | 360 |
| 7 | 720 |
| 8 | 720 |
| 9 | 720 |
| 10 | 720 |
| 11 | 1800 |
| 12 | 3456 |
| 13 | 8640 |
| 14 | 8640 |
| 15 | 8640 |
| 16 | 8640 |
| 17 | 17280 |
| 18 | 17280 |
| 19 | 21600 |
| 20 | 43200 |
| 21 | 43200 |
| 22 | 207360 |
| 23 | 207360 |
| 24 | 518400 |
| 25 | 518400 |
| 26 | 1036800 |
| 27 | 12441600 |