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 | 32 |
| 2 | -434 |
| 3 | -107200 |
| 4 | -1532084 |
| 5 | 576163712 |
| 6 | 29606131144 |
| 7 | -4092883955968 |
| 8 | -433132461046640 |
| 9 | 33879159708918272 |
| 10 | 6767697264539394784 |
| 11 | -277391836090767772672 |
| 12 | -117416867483587382271296 |
| 13 | 1095907804769276717987840 |
| 14 | 2260588356036532098545755264 |