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 | 1 |
| 2 | 0 |
| 3 | -2 |
| 4 | -3 |
| 5 | -3 |
| 6 | -8 |
| 7 | -6 |
| 8 | -3 |
| 9 | 0 |
| 10 | 40 |
| 11 | 48 |
| 12 | 54 |
| 13 | 57 |
| 14 | 57 |
| 15 | 256 |
| 16 | 216 |
| 17 | 168 |
| 18 | 114 |
| 19 | 57 |
| 20 | 0 |
| 21 | -1952 |
| 22 | -2208 |
| 23 | -2424 |
| 24 | -2592 |
| 25 | -2706 |
| 26 | -2763 |
| 27 | -2763 |
| 28 | -17408 |
| 29 | -15456 |
| 30 | -13248 |
| 31 | -10824 |
| 32 | -8232 |
| 33 | -5526 |
| 34 | -2763 |
| 35 | 0 |
| 36 | 177280 |
| 37 | 194688 |
| 38 | 210144 |
| 39 | 223392 |
| 40 | 234216 |
| 41 | 242448 |
| 42 | 247974 |
| 43 | 250737 |
| 44 | 250737 |