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 | -1618 |
| 3 | -39856 |
| 4 | 7845580 |
| 5 | 330915808 |
| 6 | -63334001336 |
| 7 | -3846274345024 |
| 8 | 714924336969872 |
| 9 | 57474862282401920 |
| 10 | -10362725714790706976 |
| 11 | -1049628989308325950208 |
| 12 | 183334119260591052868288 |
| 13 | 22652384474283979401944576 |
| 14 | -3827564775957812126802428800 |