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 | 238 |
| 3 | -67608 |
| 4 | -3189300 |
| 5 | 171302256 |
| 6 | 23038278216 |
| 7 | -258048705312 |
| 8 | -179911241858928 |
| 9 | -4292680465160640 |
| 10 | 1558578348234929376 |
| 11 | 101525379857857028736 |
| 12 | -14483821141875255043392 |
| 13 | -1810383783782862018394368 |
| 14 | 134036659769169225204616320 |
| 15 | 31640724357081844323823566336 |