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 | 12 |
| 3 | 36 |
| 4 | 168 |
| 5 | 240 |
| 6 | 504 |
| 7 | 702 |
| 8 | 720 |
| 9 | 1176 |
| 10 | 1200 |
| 11 | 1344 |
| 12 | 1404 |
| 13 | 1620 |
| 14 | 3528 |
| 15 | 3600 |
| 16 | 4032 |
| 17 | 4050 |
| 18 | 6480 |
| 19 | 8100 |
| 20 | 9408 |
| 21 | 14880 |
| 22 | 19656 |
| 23 | 22680 |
| 24 | 23250 |
| 25 | 28080 |
| 26 | 28224 |
| 27 | 32400 |
| 28 | 44640 |
| 29 | 46500 |
| 30 | 53460 |
| 31 | 63882 |
| 32 | 65280 |
| 33 | 69750 |
| 34 | 74400 |
| 35 | 113400 |
| 36 | 127764 |
| 37 | 132678 |
| 38 | 133650 |
| 39 | 137592 |
| 40 | 139500 |