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 | -1394 |
| 3 | -34480 |
| 4 | 5821516 |
| 5 | 247659488 |
| 6 | -40457575736 |
| 7 | -2490185806912 |
| 8 | 392988531506320 |
| 9 | 32189435503872128 |
| 10 | -4899280026394954016 |
| 11 | -508516209857615258368 |
| 12 | 74506523384461350441664 |
| 13 | 9493051794744527363939840 |
| 14 | -1336252229871124217359780736 |