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 | 14 |
| 2 | -1726 |
| 3 | -77980 |
| 4 | 8860396 |
| 5 | 723555784 |
| 6 | -75018624584 |
| 7 | -9394306045264 |
| 8 | 877780290519440 |
| 9 | 156735773819251424 |
| 10 | -12989542631935753184 |
| 11 | -3194315169653112913856 |
| 12 | 229904497949242113022144 |
| 13 | 76892348044168785827484800 |
| 14 | -4667900913141400434386502784 |