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 | 4 |
| 4 | 6 |
| 5 | 12 |
| 6 | 24 |
| 7 | 72 |
| 8 | 66 |
| 9 | 484 |
| 10 | 132 |
| 11 | 616 |
| 12 | 264 |
| 13 | 2112 |
| 14 | 792 |
| 15 | 1848 |
| 16 | 2772 |
| 17 | 7326 |
| 18 | 8712 |
| 19 | 5544 |
| 20 | 13332 |
| 21 | 14652 |
| 22 | 24024 |
| 23 | 36036 |
| 24 | 26664 |
| 25 | 87912 |
| 26 | 102564 |
| 27 | 72072 |
| 28 | 79992 |
| 29 | 186648 |
| 30 | 205128 |
| 31 | 360360 |
| 32 | 279972 |
| 33 | 264264 |
| 34 | 666666 |
| 35 | 1213212 |
| 36 | 879912 |
| 37 | 559944 |
| 38 | 888888 |
| 39 | 792792 |