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 | 7 |
| 1 | -742 |
| 2 | 11978 |
| 3 | -3740526 |
| 4 | 1099482930 |
| 5 | -2202719155 |
| 6 | 6600663644 |
| 7 | -26413901692 |
| 8 | 96840976853 |
| 9 | -496325469560 |
| 10 | 2346251883960 |
| 11 | -44006595799206 |
| 12 | 1345586183756654 |
| 13 | -4127747481719463 |
| 14 | 10251870941174304 |