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 | 0 |
| 1 | -1 |
| 2 | -1 |
| 3 | -2 |
| 4 | -2 |
| 5 | -2 |
| 6 | 0 |
| 7 | 4 |
| 8 | 12 |
| 9 | 24 |
| 10 | 40 |
| 11 | 56 |
| 12 | 64 |
| 13 | 48 |
| 14 | -16 |
| 15 | -160 |
| 16 | -416 |
| 17 | -800 |
| 18 | -1280 |
| 19 | -1728 |
| 20 | -1856 |
| 21 | -1152 |
| 22 | 1152 |
| 23 | 6016 |
| 24 | 14336 |
| 25 | 26368 |
| 26 | 40704 |
| 27 | 52736 |
| 28 | 52736 |
| 29 | 24064 |
| 30 | -57344 |
| 31 | -220160 |
| 32 | -488448 |
| 33 | -862208 |
| 34 | -1284096 |
| 35 | -1591296 |
| 36 | -1458176 |
| 37 | -348160 |