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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 112 |
| 5 | 3375 |
| 6 | 64000 |
| 7 | 3730525 |
| 8 | 695506456 |
| 9 | 296474109632 |
| 10 | 213878375483220 |
| 11 | 277097671756733625 |
| 12 | 698661245965852901376 |
| 13 | 3571973803766628613975275 |
| 14 | 36637997062083838981741624968 |