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 | 5 |
| 2 | -47 |
| 3 | -955 |
| 4 | 5377 |
| 5 | 301925 |
| 6 | -426095 |
| 7 | -132562075 |
| 8 | -448058495 |
| 9 | 74115462725 |
| 10 | 660919218385 |
| 11 | -50058537070075 |
| 12 | -773740706311295 |
| 13 | 39381872496988325 |
| 14 | 921130663592313745 |
| 15 | -35091274159002662875 |
| 16 | -1170277487474712158975 |
| 17 | 34573760393797506837125 |