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 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 30 |
| 6 | 60 |
| 7 | 120 |
| 8 | 252 |
| 9 | 504 |
| 10 | 504 |
| 11 | 504 |
| 12 | 504 |
| 13 | 2730 |
| 14 | 16380 |
| 15 | 32760 |
| 16 | 65520 |
| 17 | 65520 |
| 18 | 65520 |
| 19 | 65520 |
| 20 | 65520 |
| 21 | 65520 |
| 22 | 65520 |
| 23 | 65520 |
| 24 | 65520 |
| 25 | 65520 |
| 26 | 65520 |
| 27 | 65520 |
| 28 | 65520 |
| 29 | 131040 |
| 30 | 131040 |
| 31 | 131040 |
| 32 | 131040 |
| 33 | 171864 |
| 34 | 171864 |
| 35 | 171864 |
| 36 | 171864 |
| 37 | 1919190 |
| 38 | 11515140 |
| 39 | 69090840 |