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 | 10 |
| 2 | -1927 |
| 3 | -175816 |
| 4 | -4179663 |
| 5 | -48667074 |
| 6 | -361025495 |
| 7 | -1957839572 |
| 8 | -8375575711 |
| 9 | -29023111918 |
| 10 | -74062575399 |
| 11 | 0 |
| 12 | 2395420006033 |
| 13 | 32730551749894 |
| 14 | 375700268413577 |
| 15 | 4168598413556276 |
| 16 | 45932137677527745 |
| 17 | 505412756602986138 |