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) |
|---|---|
| 2 | 1 |
| 3 | 4 |
| 4 | 6 |
| 5 | 48 |
| 6 | 4 |
| 7 | 720 |
| 8 | 1260 |
| 9 | 1680 |
| 10 | 48 |
| 11 | 50400 |
| 12 | 6 |
| 13 | 665280 |
| 14 | 720 |
| 15 | 48 |
| 16 | 1081080 |
| 17 | 43243200 |
| 18 | 1680 |
| 19 | 2205403200 |
| 20 | 48 |
| 21 | 720 |
| 22 | 50400 |
| 23 | 293318625600 |
| 24 | 1260 |
| 25 | 128501493120 |
| 26 | 665280 |
| 27 | 4655851200 |
| 28 | 720 |
| 29 | 26985313555200 |
| 30 | 48 |
| 31 | 782574093100800 |
| 32 | 1516237305382800 |
| 33 | 50400 |
| 34 | 43243200 |
| 35 | 720 |
| 36 | 1680 |