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 | -12 |
| 2 | 60 |
| 3 | -156 |
| 4 | 204 |
| 5 | -72 |
| 6 | -84 |
| 7 | -96 |
| 8 | 492 |
| 9 | -588 |
| 10 | 360 |
| 11 | -144 |
| 12 | 60 |
| 13 | -168 |
| 14 | 480 |
| 15 | -936 |
| 16 | 1068 |
| 17 | -216 |
| 18 | -516 |
| 19 | -240 |
| 20 | 1224 |
| 21 | -1248 |
| 22 | 720 |
| 23 | -288 |
| 24 | 348 |
| 25 | -372 |
| 26 | 840 |
| 27 | -1884 |
| 28 | 1632 |
| 29 | -360 |
| 30 | -504 |
| 31 | -384 |
| 32 | 2220 |
| 33 | -1872 |
| 34 | 1080 |
| 35 | -576 |
| 36 | -372 |
| 37 | -456 |
| 38 | 1200 |
| 39 | -2184 |
| 40 | 2952 |
| 41 | -504 |
| 42 | -672 |
| 43 | -528 |
| 44 | 2448 |