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 | 26 |
| 2 | -1246 |
| 3 | -132340 |
| 4 | 3743596 |
| 5 | 1114763416 |
| 6 | -6992108744 |
| 7 | -13037246540656 |
| 8 | -244896579015280 |
| 9 | 194093391754729376 |
| 10 | 9282649209429277216 |
| 11 | -3489126110080737399104 |
| 12 | -286971048447852951277376 |
| 13 | 73011957343257950639722880 |
| 14 | 9068569507442760557249311616 |