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) |
|---|---|
| 2 | 4 |
| 3 | 12 |
| 4 | 60 |
| 5 | 72 |
| 6 | 240 |
| 7 | 192 |
| 8 | 2112 |
| 9 | 1152 |
| 10 | 14592 |
| 11 | 26112 |
| 12 | 15360 |
| 13 | 139968 |
| 14 | 138240 |
| 15 | 675840 |
| 16 | 2101248 |
| 17 | 737280 |
| 18 | 4866048 |
| 19 | 786432 |
| 20 | 22118400 |
| 21 | 36175872 |
| 22 | 194641920 |
| 23 | 63700992 |
| 24 | 138412032 |
| 25 | 169869312 |
| 26 | 1321205760 |
| 27 | 11123294208 |
| 28 | 16357785600 |
| 29 | 25669140480 |