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 | 0 |
| 1 | 32 |
| 2 | 1056 |
| 3 | 8832 |
| 4 | 41600 |
| 5 | 141600 |
| 6 | 390432 |
| 7 | 928256 |
| 8 | 1976832 |
| 9 | 3866400 |
| 10 | 7066400 |
| 11 | 12220032 |
| 12 | 20182656 |
| 13 | 32064032 |
| 14 | 49274400 |
| 15 | 73574400 |
| 16 | 107128832 |
| 17 | 152564256 |
| 18 | 213030432 |
| 19 | 292265600 |
| 20 | 394665600 |
| 21 | 525356832 |
| 22 | 690273056 |
| 23 | 896236032 |
| 24 | 1151040000 |
| 25 | 1463540000 |
| 26 | 1843744032 |