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 | 44 |
| 2 | 14 |
| 3 | -168520 |
| 4 | -7495604 |
| 5 | 965775184 |
| 6 | 114526862536 |
| 7 | -6098137470304 |
| 8 | -1809162457252720 |
| 9 | 14161813624274624 |
| 10 | 31918011985025634016 |
| 11 | 1132202469482569623424 |
| 12 | -624993700730178890935616 |
| 13 | -53612840588273856995818240 |
| 14 | 13257127620560200061101298816 |