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) |
|---|---|
| 3 | 1 |
| 4 | 6 |
| 5 | 1 |
| 6 | 42 |
| 7 | 14 |
| 8 | 1 |
| 9 | 336 |
| 10 | 168 |
| 11 | 24 |
| 12 | 1 |
| 13 | 3024 |
| 14 | 2016 |
| 15 | 432 |
| 16 | 36 |
| 17 | 1 |
| 18 | 30240 |
| 19 | 25200 |
| 20 | 7200 |
| 21 | 900 |
| 22 | 50 |
| 23 | 1 |
| 24 | 332640 |
| 25 | 332640 |
| 26 | 118800 |
| 27 | 19800 |
| 28 | 1650 |
| 29 | 66 |
| 30 | 1 |
| 31 | 3991680 |
| 32 | 4656960 |
| 33 | 1995840 |
| 34 | 415800 |
| 35 | 46200 |
| 36 | 2772 |
| 37 | 84 |
| 38 | 1 |
| 39 | 51891840 |
| 40 | 69189120 |
| 41 | 34594560 |
| 42 | 8648640 |
| 43 | 1201200 |
| 44 | 96096 |
| 45 | 4368 |