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 | 32 |
| 2 | -898 |
| 3 | -151744 |
| 4 | 322060 |
| 5 | 1176913792 |
| 6 | 34566244744 |
| 7 | -12466050017536 |
| 8 | -863967857346928 |
| 9 | 164031013634531840 |
| 10 | 20193908432692179424 |
| 11 | -2506471012209552223232 |
| 12 | -507146684474683728525632 |
| 13 | 41580553522411233163802624 |
| 14 | 14002144771001607102183125120 |