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 | 38 |
| 2 | -478 |
| 3 | -164236 |
| 4 | -3484820 |
| 5 | 1130223208 |
| 6 | 76437602104 |
| 7 | -10129105154704 |
| 8 | -1413297494585968 |
| 9 | 102039816064461920 |
| 10 | 28324733071797627424 |
| 11 | -884865408030648260288 |
| 12 | -632466392109110072889152 |
| 13 | -3625187129327311294505344 |
| 14 | 15665048162323786452017148800 |