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 | 36 |
| 5 | 1 |
| 6 | 1764 |
| 7 | 100 |
| 8 | 1 |
| 9 | 112896 |
| 10 | 9864 |
| 11 | 200 |
| 12 | 1 |
| 13 | 9144576 |
| 14 | 1099296 |
| 15 | 34064 |
| 16 | 344 |
| 17 | 1 |
| 18 | 914457600 |
| 19 | 142159392 |
| 20 | 6004512 |
| 21 | 92200 |
| 22 | 540 |
| 23 | 1 |
| 24 | 110649369600 |
| 25 | 21385410048 |
| 26 | 1156921920 |
| 27 | 24075712 |
| 28 | 213700 |
| 29 | 796 |
| 30 | 1 |
| 31 | 15933509222400 |
| 32 | 3724783667712 |
| 33 | 248142106368 |
| 34 | 6573957120 |
| 35 | 78782912 |
| 36 | 443744 |
| 37 | 1120 |
| 38 | 1 |