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 | 372 |
| 2 | 29250 |
| 3 | -134120 |
| 4 | 54261375 |
| 5 | -6139293372 |
| 6 | 854279148734 |
| 7 | -128813964933000 |
| 8 | 20657907916144515 |
| 9 | -3469030105750871000 |
| 10 | 603760629237519966018 |
| 11 | -108124880417607682194048 |
| 12 | 19820541224206810447813500 |