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 | 6 |
| 2 | 12 |
| 3 | 198 |
| 4 | 240 |
| 5 | 264 |
| 6 | 270 |
| 7 | 396 |
| 8 | 540 |
| 9 | 6720 |
| 10 | 7920 |
| 11 | 11880 |
| 12 | 13770 |
| 13 | 27540 |
| 14 | 221760 |
| 15 | 337440 |
| 16 | 605880 |
| 17 | 2500344 |
| 18 | 6072570 |
| 19 | 11135520 |
| 20 | 12145140 |
| 21 | 267193080 |
| 22 | 441692160 |
| 23 | 1112629770 |
| 24 | 2225259540 |
| 25 | 14575841280 |
| 26 | 48955709880 |