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 | 6 |
| 3 | 12 |
| 4 | 60 |
| 5 | 180 |
| 6 | 240 |
| 7 | 7560 |
| 8 | 55440 |
| 9 | 110880 |
| 10 | 73329656400 |
| 11 | 18632716502400 |
| 12 | 130429015516800 |
| 13 | 48519593772249600 |
| 14 | 149602080797769600 |
| 15 | 74377068101903920953600 |
| 16 | 927967188666725711881005276648000 |
| 17 | 241271469053348685089061371928480000 |