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) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | 2 |
| 4 | 1 |
| 5 | -8 |
| 6 | 9 |
| 7 | -1 |
| 8 | 24 |
| 9 | -81 |
| 10 | 64 |
| 11 | 1 |
| 12 | -64 |
| 13 | 486 |
| 14 | -1024 |
| 15 | 625 |
| 16 | -1 |
| 17 | 160 |
| 18 | -2430 |
| 19 | 10240 |
| 20 | -15625 |
| 21 | 7776 |
| 22 | 1 |
| 23 | -384 |
| 24 | 10935 |
| 25 | -81920 |
| 26 | 234375 |
| 27 | -279936 |
| 28 | 117649 |
| 29 | -1 |
| 30 | 896 |
| 31 | -45927 |
| 32 | 573440 |
| 33 | -2734375 |
| 34 | 5878656 |
| 35 | -5764801 |
| 36 | 2097152 |
| 37 | 1 |
| 38 | -2048 |
| 39 | 183708 |
| 40 | -3670016 |
| 41 | 27343750 |
| 42 | -94058496 |
| 43 | 161414428 |
| 44 | -134217728 |
| 45 | 43046721 |