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) |
|---|---|
| 8 | 1 |
| 9 | 18 |
| 10 | 180 |
| 11 | 10 |
| 12 | 1320 |
| 13 | 220 |
| 14 | 7920 |
| 15 | 2640 |
| 16 | 66 |
| 17 | 41184 |
| 18 | 22880 |
| 19 | 1716 |
| 20 | 192192 |
| 21 | 160160 |
| 22 | 24024 |
| 23 | 364 |
| 24 | 823680 |
| 25 | 960960 |
| 26 | 240240 |
| 27 | 10920 |
| 28 | 3294720 |
| 29 | 5125120 |
| 30 | 1921920 |
| 31 | 174720 |
| 32 | 1820 |
| 33 | 12446720 |
| 34 | 24893440 |
| 35 | 13069056 |
| 36 | 1980160 |
| 37 | 61880 |
| 38 | 44808192 |
| 39 | 112020480 |