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 | -658 |
| 3 | -128704 |
| 4 | -798260 |
| 5 | 840376192 |
| 6 | 33605404744 |
| 7 | -7405703577856 |
| 8 | -632652549947248 |
| 9 | 79406265745318400 |
| 10 | 12118094804951629024 |
| 11 | -947834356077803359232 |
| 12 | -254539689475704747697472 |
| 13 | 10985818579851831076419584 |
| 14 | 5917311044631018607598349440 |