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 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 120 |
| 6 | 720 |
| 7 | 727 |
| 8 | 776 |
| 9 | 1224 |
| 10 | 5760 |
| 11 | 56160 |
| 12 | 666000 |
| 13 | 666013 |
| 14 | 666182 |
| 15 | 668730 |
| 16 | 709680 |
| 17 | 1408560 |
| 18 | 14032080 |
| 19 | 14032099 |
| 20 | 14032460 |
| 21 | 14040060 |
| 22 | 14207640 |
| 23 | 18069960 |
| 24 | 110941200 |
| 25 | 110941225 |
| 26 | 110941850 |
| 27 | 110958750 |
| 28 | 111432600 |
| 29 | 125191800 |
| 30 | 538459200 |
| 31 | 538459231 |
| 32 | 538460192 |