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 | -312 |
| 2 | -122328 |
| 3 | 1193376 |
| 4 | 120735336 |
| 5 | 123318576 |
| 6 | -26119268064 |
| 7 | -383848045248 |
| 8 | -3132125965080 |
| 9 | -18290795499096 |
| 10 | -84925855577232 |
| 11 | -331983655889184 |
| 12 | -1133781877844448 |
| 13 | -3470165144567184 |
| 14 | -9697162366507968 |
| 15 | -25093220330304576 |
| 16 | -60786860467926552 |