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 | -6 |
| 2 | -8 |
| 3 | 112 |
| 4 | -86 |
| 5 | -752 |
| 6 | 1360 |
| 7 | 1216 |
| 8 | -5384 |
| 9 | 10762 |
| 10 | -8176 |
| 11 | -59888 |
| 12 | 130160 |
| 13 | 47696 |
| 14 | -306336 |
| 15 | 485952 |
| 16 | -632982 |
| 17 | -1582304 |
| 18 | 4638088 |
| 19 | 343120 |
| 20 | -6514672 |
| 21 | 8034464 |
| 22 | -16636656 |
| 23 | -20670528 |
| 24 | 82724176 |
| 25 | 17877578 |
| 26 | -114481936 |
| 27 | 52539968 |
| 28 | -178638656 |