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 | -378 |
| 2 | -36288 |
| 3 | -6664896 |
| 4 | -1950813774 |
| 5 | -672039262944 |
| 6 | -253536117254784 |
| 7 | -101485291597998336 |
| 8 | -42360328701954544176 |
| 9 | -18242860786892766495450 |
| 10 | -8049299329628263783504512 |
| 11 | -3621056234759774113947852096 |