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 | -16 |
| 2 | 88 |
| 3 | -96 |
| 4 | -836 |
| 5 | 2592 |
| 6 | 1824 |
| 7 | -11616 |
| 8 | -12858 |
| 9 | 27248 |
| 10 | 160064 |
| 11 | -123168 |
| 12 | -634664 |
| 13 | -132000 |
| 14 | 1016416 |
| 15 | 4677376 |
| 16 | 375569 |
| 17 | -13049296 |
| 18 | -24306064 |
| 19 | -14447360 |
| 20 | 115090052 |
| 21 | 159327776 |
| 22 | 10482048 |
| 23 | -443275328 |
| 24 | -1133277978 |