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 | 3 |
| 2 | 12 |
| 3 | 12 |
| 4 | 24 |
| 5 | 24 |
| 6 | 168 |
| 7 | 504 |
| 8 | 2520 |
| 9 | 2520 |
| 10 | 2520 |
| 11 | 10080 |
| 12 | 191520 |
| 13 | 191520 |
| 14 | 2106720 |
| 15 | 2106720 |
| 16 | 6320160 |
| 17 | 6320160 |
| 18 | 195924960 |
| 19 | 3330724320 |
| 20 | 3330724320 |
| 21 | 123236799840 |
| 22 | 123236799840 |
| 23 | 123236799840 |
| 24 | 123236799840 |
| 25 | 862657598880 |
| 26 | 862657598880 |