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 | 936 |
| 2 | 134568 |
| 3 | -173988576 |
| 4 | -104617833048 |
| 5 | -27210540914064 |
| 6 | -3910401774129888 |
| 7 | -322823174243838912 |
| 8 | -15429983442476298840 |
| 9 | -469709326015243815672 |
| 10 | -9973673112569954220432 |
| 11 | -158215072218253260221088 |
| 12 | -1972939697011615168926432 |