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 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | -2 |
| 6 | 0 |
| 7 | 16 |
| 8 | -10 |
| 9 | 9 |
| 10 | 0 |
| 11 | 125 |
| 12 | -72 |
| 13 | 63 |
| 14 | -64 |
| 15 | 0 |
| 16 | 1296 |
| 17 | -686 |
| 18 | 576 |
| 19 | -576 |
| 20 | 625 |
| 21 | 0 |
| 22 | 16807 |
| 23 | -8192 |
| 24 | 6561 |
| 25 | -6400 |
| 26 | 6875 |
| 27 | -7776 |
| 28 | 0 |
| 29 | 262144 |
| 30 | -118098 |
| 31 | 90000 |
| 32 | -85184 |
| 33 | 90000 |
| 34 | -101088 |
| 35 | 117649 |
| 36 | 0 |
| 37 | 4782969 |
| 38 | -2000000 |
| 39 | 1449459 |
| 40 | -1327104 |
| 41 | 1373125 |
| 42 | -1524096 |
| 43 | 1764735 |
| 44 | -2097152 |