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 | 8 |
| 2 | -175 |
| 3 | -5832 |
| 4 | -58975 |
| 5 | -331576 |
| 6 | -1148175 |
| 7 | -981832 |
| 8 | 26269505 |
| 9 | 344373768 |
| 10 | 3386784401 |
| 11 | 31166700728 |
| 12 | 281999554785 |
| 13 | 2541050097608 |
| 14 | 22875316665905 |
| 15 | 205888569204024 |
| 16 | 1853015893884545 |
| 17 | 16677174723909128 |
| 18 | 150094624277038545 |