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) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 8 |
| 3 | 6 |
| 4 | 0 |
| 5 | 1 |
| 6 | 4752 |
| 7 | 10752 |
| 8 | 11776 |
| 9 | 7680 |
| 10 | 3936 |
| 11 | 1024 |
| 12 | 384 |
| 13 | 0 |
| 14 | 16 |
| 15 | 17927568 |
| 16 | 64105344 |
| 17 | 109524960 |
| 18 | 117863424 |
| 19 | 89474544 |
| 20 | 49828608 |
| 21 | 21352896 |
| 22 | 6718464 |
| 23 | 1854576 |
| 24 | 279936 |
| 25 | 69984 |
| 26 | 0 |
| 27 | 1296 |
| 28 | 248341303296 |
| 29 | 1215287525376 |