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 | 2 |
| 1 | 2 |
| 2 | 4 |
| 3 | 2 |
| 4 | 12 |
| 5 | 16 |
| 6 | 0 |
| 7 | 24 |
| 8 | 96 |
| 9 | 96 |
| 10 | -8 |
| 11 | 0 |
| 12 | 320 |
| 13 | 960 |
| 14 | 768 |
| 15 | 0 |
| 16 | -240 |
| 17 | 0 |
| 18 | 4800 |
| 19 | 11520 |
| 20 | 7680 |
| 21 | 240 |
| 22 | 0 |
| 23 | -6720 |
| 24 | 0 |
| 25 | 80640 |
| 26 | 161280 |
| 27 | 92160 |
| 28 | 0 |
| 29 | 13440 |
| 30 | 0 |
| 31 | -188160 |
| 32 | 0 |
| 33 | 1505280 |
| 34 | 2580480 |
| 35 | 1290240 |
| 36 | -24192 |
| 37 | 0 |
| 38 | 645120 |
| 39 | 0 |
| 40 | -5419008 |
| 41 | 0 |
| 42 | 30965760 |
| 43 | 46448640 |
| 44 | 20643840 |