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 | 36 |
| 2 | -626 |
| 3 | -160920 |
| 4 | -2183604 |
| 5 | 1158543216 |
| 6 | 62691990216 |
| 7 | -11103408719136 |
| 8 | -1243180750254960 |
| 9 | 125971505456256576 |
| 10 | 26039514814335534816 |
| 11 | -1483749801553172137344 |
| 12 | -603942415060596074024256 |
| 13 | 12479278480840903510828800 |
| 14 | 15539359208014326031959897216 |